How to clean greenery from a copper coin

How to remove greens from a copper coin

Not only numismatists are interested in how to clean copper coins, but also connoisseurs of antiquities. Rare things, especially copper ones, are attractive. They are charmingly beautiful, but this beauty is hidden under a layer of dirt, plaque and oxides. Cleaning ancient finds that have been exposed to an aggressive environment is difficult, but quite possible.

Before you start directly cleaning the copper from oxides, you need to carefully remove the layer of earth, clay and dirt from it. To do this, you need to rinse the coin under warm running water, using soap and carefully removing the layer of dirt with a brush. Finds can also be left in distilled water for several days.

The structure of copper is weak and unstable, it is very prone to oxidation, corrosion and structural changes. The main thing in cleaning copper coins is to do no harm. Therefore, if you are not a professional, then it is better to entrust the sedum process to knowledgeable people. Conduct your first clearings and gain experience on inexpensive coins.

The nature of formations on the surface of copper coins

The deposit of dirt and earth on the surface of the coin is the smallest part in cleaning. A complex mixture of gases in the form of air contributes to the formation of deposits of varying complexity and colors on the copper surface. The most common colors are:

• black – copper oxide and sulfide;
• green - copper dihydroxide carbonate;
• blue – copper azurite;
• red-brown - copper oxide.

The most difficult thing is to determine how to clean a copper coin from green deposits without spoiling it. Before you begin the actual process of removing plaque, you need to understand its nature. There is a very toxic layer for a copper coin, called verdigris or green copper, formed during the reaction of copper with oxygen. This is a very strong oxidation that is difficult to remove.

There is also a layer of oxide - patina. It does not spoil, but protects the surface from the negative influence of air. It is formed over a long period of time, under the influence of earth and air. Many numismatists believe that the patina should not be removed from a copper coin, as it indicates authenticity and value.

Methods that are recommended and used for cleaning

If you set yourself a goal, you will get a lot of recommendations for cleaning coppers. On various forums and websites you will find advice on how and with what to clean copper coins at home.

The following cleaning methods are used:

• in a soap solution;
• in citric acid;
• in kefir;
• ammonia;
• electrolysis;
• vinegar;
• boiling in soda;
• boiling in oil;
• trinol B;
• mechanical cleaning.

Each cleaning method has the right to life, everyone can give a positive result even at home. But not all methods are safe for the coin. If you are dealing with old money, it is better not to take risks, so as not to regret it.

Safe methods for getting rid of green plaque

Most of all, any owner of an antique is interested in how to clean a copper coin from greenery safely and effectively. One of the simple and effective methods of cleaning greens is to immerse a coin in kefir for several hours. Afterwards, rinse the coin in distilled water. This cleaning will not harm the copper or the design, but in some cases it may not be enough.

The safest method is soaking in soapy water. A slightly alkaline soapy environment will gently dissolve copper oxides. Use laundry or baby soap, grated and poured with boiling water. Coins are immersed in the thickened solution for an indefinite period of time. The process is repeated several times if the greens do not go away immediately. The main disadvantage is the duration of the method, sometimes it takes months.

Medical ammonia will help remove the green coating from copper. It is enough to immerse the coin for 30 seconds and then clean it with a brush. These steps must be repeated several times until the greenery is gone. With this method, the patina will disappear from the surface, but the coin will not lose color, the main thing is not to overexpose it in ammonia.

A 10% solution of citric acid is also used to clean bright green plaque.

The most effective cleaning methods

A quick, high-quality and simple cleaning option is to boil coppers in a soda solution. Dissolve 3-5 tablespoons of soda in a liter of water and boil the coins in the solution for 30 minutes. The green oxides should go away, the patina layer is not destroyed, but cavities and irregularities may open.

Very good results are obtained by cleaning copper coins in a special product Trilon B. Most insoluble metal salts dissolve in it, so all oxides and patina are removed from the surface of the copper coins.

Trinol B does not destroy metal and provides high cleaning speed. If the coin has uniform oxides, then it is cleaned to a shine. If the structure of the oxides is uneven, they may remain, and the method must be repeated.

After such cleaning, it is necessary to carry out artificial patination.

The most masterly and effective is mechanical cleaning - a grandiose experience and work of a master. The coin is restored by removing excess from the surface using special tools. The work is carried out by a real professional under a microscope. There are no cavities or flaws left, the results are simply magnificent.

Dangerous cleaning methods

You need to think carefully about whether you need to clean your coins at all. Very often, uncleaned copper money is valued significantly more. It may happen that cleaning will reveal all the imperfections of the coin that were hidden under a layer of patina and oxides or destroy it altogether.

Methods of removing deposits that use various acids can greatly destroy the coin. Yes, any acid will quickly remove the green coating, but at the same time all cavities, destruction and irregularities will be exposed. Cleaning copper coins by electrolysis can be completely unsafe, since the work involves electricity. If the coin does not have severe damage and obvious cavities, then this method will be effective. Otherwise, all defects will be exposed and the value will be destroyed.

A dangerous method is boiling coins in oil; with this technique you must be careful and be sure to follow safety precautions. Always use special safety glasses and clothing. The container must be open, as oil vapor may explode. Vegetable or medical Vaseline oil is used. The boiling point of oils is more than 300 degrees, copper carbonates dissolve completely.

We give the cleaned coin an attractive presentation

After any cleaning, it is recommended to “boil” the copper money, that is, boil it several times in distilled water. Any cleaning method will give the coppers an unsightly appearance. To achieve a beautiful appearance, the coin is covered with an artificial patina.

Dissolve 50 g of copper sulfate and 5 g of potassium permanganate in a liter of distilled water. Coins are dipped into a solution heated to 80 degrees. You should monitor the color change and periodically turn the coins over.

Remove the coppers from the solution after obtaining the desired color.

After this procedure, the coins are dried and a protective coating is applied. This is also called “mothballing” the coin. Use a 1:1 mixture of benzene and alcohol. You can also use beeswax as such a coating.

All of the above is not ultimately true. This is just the experience and advice of some numismatists. If cleaning copper coins is a new area for you, we recommend that you practice on inexpensive coins and entrust valuable specimens to professionals.

Source: https://respect-kovka.com/kak-ubrat-zelen-s-mednoy-monety/

How to clean a copper coin at home

Cleaning a copper coin at home is quite easy. If you have old metal money lying around at home and you decide to clean it up, you need to study various cleaning methods and strictly follow the chosen procedure.  

Cleaning a copper coin at home is quite easy.

Cleaning at home

There are simple ways to clean coins using improvised means. For example, using warm water and soap. This option is suitable for almost all metals. Just pour hot water into a bowl and throw in the soap. Lightly stir the water to create a soapy mass. Dip the products there and leave them to “soak” for 3-4 hours.

Then stir the products in the water using a wooden stick. Pour the water through a large sieve. Now pour warm water into a bowl of coins and stir them with your hands to get rid of soap scum. Drain the water through the sieve again. That's it - your money must be clean.

You can try to enhance the effect with the cleaning products you use on your dishes. If the coins have a thick coating, then it is better to soak them in a soap solution for a day, or even two. Just add hot water from time to time to maintain the desired temperature.

Some people recommend using baking soda. This method is suitable for low-grade copper and silver metals that are resistant to destruction.  

There are simple ways to clean coins at home

The process itself is simple and will not take much time. Take a small bowl and add 1-2 tablespoons of baking soda. Pour 4-5 tbsp into a bowl. l. water. Mix everything to form a “porridge”. After this, apply the solution to the money on both sides using rubbing movements.

You can simplify the process by pouring the coins into a bowl of solution and stirring with a spoon until they are completely covered with the soda slurry. After this, you need to take a toothbrush and clean off the dirt without rinsing off the soda. When finished, rinse the coins under running water and leave them to dry.

Additionally, you can use vinegar. Vinegar or citric acid is best used to clean stubborn hard metals. Take a glass and fill it halfway with hot water. Pour table vinegar into the water, filling the glass completely. You should end up with an equal ratio of water and vinegar.

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Next, add a tablespoon of baking soda to the mixture and stir. Pour the contents of the glass into a small bowl, add 2 more glasses of hot water and stir everything. After this, you need to immerse all the products in the solution and leave there for about 4-5 hours.

Monitor the process, as the duration of action of the composition depends on the degree of contamination of the metal. This can take half an hour or a day. When all the dirt is gone and there are no stains left on the coins, you need to wash them in hot water and soap and dry them. It is better not to use this method for cleaning high-grade metals: silver, gold and copper.

You can use alcohol. You need to pour alcohol into a bowl so that it covers all the money. Wait 5-10 minutes. Then wash the coins with hot water and soap.

Important! Be careful with alcohol, do not lean low over a bowl of alcohol and do not inhale its vapors, as this can result in burns to the nasal passages. After cleaning is completed, you need to ventilate the room.

Mechanical cleaning

In addition to chemical ones, there are also mechanical cleaning methods.

1. Cleaning with sandpaper. Use medium-hard sandpaper to avoid damaging the metal. Spread it on a horizontal surface, securing the corners. Follow safety precautions to avoid damaging your fingers and hands; wear gloves (you can use garden gloves). Take the copper circle in your hands and begin to move one side along the sandpaper, lightly pressing on top with your thumb. After 4-5 movements, repeat the procedure on the other side. Blow off any remaining dirt from the sandpaper and rinse the coin. If it is not completely clean, repeat the procedure.
2. Cleaning with a drill. This method is very dangerous, but very effective. For best results, you need to secure the tip of the coin in a vice. Take a drill, having first selected the required drill (the most convenient, the size does not play a special role), wrap it with sandpaper. Secure the sandpaper to the drill so that it does not come off. Next, start the drill and, lightly touching, clean the metal on one side and the other. Tip: after this it is better not to touch the coin for a while.
3. Cleaning with a metal jaw. Secure the product in a vice. Holding the wire brush with both hands, press down on the coin and make short, sharp movements. Repeat the procedure for the other side. When finished, wash the coin in hot water and soap.

This type of cleaning usually takes up to 5 minutes. After 5 minutes, do not put your hands in the water under any circumstances to avoid getting an electric shock.

Electrolysis Cleaning

Of course, the cleaning method, when you need to place the metal in a solution through which a current passes, is dangerous both for your health and for the integrity of the product. But, as practice shows, this method is very effective.

1. Power unit. Find a power supply in your home that is rated at 5-11 volts output. This means that the adapter must supply 5-11 volts at the ends of the wires. Usually, various power supplies from smartphones and tablets are suitable, since they have the power necessary in this case.
2. The end of the power supply (the plug that plugs into the phone or tablet) needs to be cut off. Cut off the rubber layer, 2 or 4 wires will appear in front of you. If there are only two in front of you, then they will be “plus” and “minus”. Red is plus, black is minus. If there are four wires in front of you, then you can cut off the extra two. The extra ones in our case are wires for data transmission (they have different colors, usually green and blue).
3. Strip the red and black wires about 2 cm and strip them of insulation.
4. Clips must be attached to the exposed ends of the wires. This is done simply: take, for example, a metal paper clip and twist the wire around it anywhere. You can also solder the wires to the clamps, but this will take more time and the structure will not be very stable. Do not touch the two wires to each other to avoid causing a short circuit. If the power supply does not have a built-in fuse and is plugged directly into an outlet, it can cause a short circuit throughout the house.
5. Insulate the wires with electrical tape. There is no need to wrap the clamps - just the wires - to prevent them from touching each other.
6. The plus clamp (red wire) must be connected directly to the coin, the minus clamp (black wire) must be attached to any other metal object (this could be a plug).
7. Place the connected objects completely into the water so that the water covers both the coin and the fork.
8. Connect the power supply to the network (outlet).

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Balls of air will begin to form around your coin, which means everything is working and electrolysis is in progress. This type of cleaning usually takes up to 5 minutes. After 5 minutes, do not put your hands in the water under any circumstances to avoid getting an electric shock. First you need to unplug the power supply and wait one minute, because the power supply has a cumulative current function and can shock you within 20-30 seconds.

Rules for cleaning copper coins

How to effectively clean metal without damaging it? Its properties should be taken into account. A harsh mechanical impact on high-grade gold will simply bend it or leave deep scratches, since gold is a rather soft metal. If you use asidol or jewelry paste on silver and at the same time clean it with a wire brush, then it is likely that you will erase all the patterns and bas-relief.

Unfortunately, copper is susceptible to the formation of multi-layered deposits of copper carbonate, that is, patina. If there are no traces of corrosion on the money, and the layer is even, then it is better not to clean it. The fact is that without patina, metal is very sensitive to mechanical and chemical cleaning. Patina is not a bad thing. A layer of copper carbonate protects the metal from corrosion. In addition, patina gives copper a more expensive and noble look.

If you need to remove minor stains, such as stubborn dirt or grease, then do the following: dip the copper circle in a soapy solution for an hour or two, and then rinse under running water.

If corrosion has begun, chemical cleaning and aggressive reagents, such as vinegar or citric acid, are used. Thanks to them, you will achieve gradual peeling of plaque and separation of the damaged layer of metal. If the coin is heavily oxidized, it is worth keeping it in a solution with an aggressive reagent for 24 hours. If the degree of oxidation is not very high, the holding time can be reduced to 5 hours.

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If cleaning is carried out carelessly, there is a chance of damaging the metal, resulting in chips and pits. You should pay attention to the type of corrosion in order to choose the safest and most effective cleaning method. It is better to remove red plaque using a 5-6% ammonia solution.

Immerse the coins in the ammonia solution and keep them for 2-3 minutes, no longer. To clean metal from green, the best solution is to use citric acid, or in rare cases, acetic acid. Place the money in a solution with vinegar for 30-40 minutes, and then remove and rinse under running water.

Yellowish plaque can be effectively removed using a 10% acetic acid solution.

Cleaning copper coins is not a very difficult process. However, there is no method that is guaranteed to help achieve the ideal look of the metal and maintain its integrity. It is almost impossible to restore the original appearance of metal money, but you can get the result as close as possible to this. To choose the most effective, fastest and safest method, you need to take into account the properties of the metal and the type of contaminants.  

Source: https://moiton.ru/chistka/kak-mozhno-pochistit-mednuyu-monetu-v-domashnih-usloviyah

Express cleaning of coins at home

If you own antique coins, take them to a restorer. Professionals will clean the products as carefully as possible. The same recommendations are relevant if the metal is severely damaged or crumbles in your hands. If you want to gain experience, use low-value specimens.

There is a way to help maintain the integrity of bronze and copper coins. Cover them with a thin layer of furniture varnish (for example, NTs-222).

You can restore the shine and shine of ancient coins at home. The main thing is accuracy and the correct sequence of actions. The only important recommendation: do not work with abrasives and hard brushes. If you have little experience and no confidence in your abilities, use the services of professionals.

Coins become covered with a dirty coating from oxidation. Almost all metals are subject to this process. Money that has been lying in the ground for a long time is very dirty. The older the metal, the stronger the oxide, so rare samples of the USSR have to be cleaned for a long time and very carefully.

The first thing you need to do before cleaning coins is to determine what material they are made of. Copper samples are the most difficult to clean: the metal must be handled very carefully. Silver coins also require careful handling. Samples made of cupronickel, an alloy of copper and nickel, are quite easy to clean. Rare zinc exhibits can only be cleaned with very weak acid solutions.

What you can and should do:

1. Use protective gloves when working with acidic products.
2. Clean money with a cotton pad or sticks dipped in the solution. You can hold the disc using tweezers.
3. Train on one sample, and then apply the appropriate remedy to the rest, more valuable ones.
4. Clean off soaked dirt after soaking with a soft sponge or children's toothbrush.

What not to do:

1. Use abrasive products. Large particles damage the coin itself.
2. Use aggressive chemicals such as Comet or Domestos.
3. Use hard tap water, which contains chlorine impurities. This element causes the oxidation of metals.

If you have concerns about the integrity of your money after cleaning at home, you should contact a professional. Numismatists use special tools for coins. It is enough to soak money in such preparations for 3 minutes. The samples are then washed with water and dried. This is the safest and most effective method, but the product will not be cheap for coin collectors.

First of all, arm yourself with the right tools. You will need a medium-hard brush and a soft cloth. The cleaning procedure is carried out using several methods.

Method 1. Wipe the coins with a weakly concentrated solution of hydrochloric acid. Dry the products. Please note: this composition is quite aggressive. It is not used for cleaning antique coins.

Method 2. Treat coins with a 3-5% vinegar solution. Apply a small amount of toothpaste to the surface. Rub gently. Wipe up any remaining residue with a damp cloth. Sand until shiny with dry flannel.

Method 3. Pour Coca-Cola into the container. Place coins in your drink overnight. In the morning, rinse the items under running water. Polish with a soft cloth.

Method 4: Place coins in soapy water. Clean the surface with baking soda without removing it from the water. Treat with a cotton pad soaked in ammonia. Rub with baking soda again. Rinse and polish the product. Baking soda is an abrasive substance, so it will not clean old coins to a shine. There may be minor scratches on the metal.

Method 5. This is the most gentle cleaning option. To work you will need laundry or baby soap. Grind ⅛ part of the bar. Dissolve soap shavings in 1 liter of water. To speed up the process, heat the liquid. Soak the coins in the prepared mixture. Leave them for 3 to 10 hours, depending on the degree of contamination. Then scrub with an old toothbrush. Once the coins start to shine, rinse under running water and polish with a dry cloth.

Iron. The main problem with this metal is the occurrence of whitish deposits and corrosion. A weak solution of hydrochloric acid will help get rid of them. Dampen a cotton pad with the product and gently wipe the coins. Clean heavily damaged areas with a thin needle or a brass wire brush. Once the rust and oxides have melted, rinse the product with running water. Dry by wrapping in a soft cloth. To restore the coin's shine, wipe it with felt.

Copper and bronze. A distinctive feature of these metals is the formation of a natural coating, patina. It has a dark brown and even black tint. It is the patina that indicates the true age of the product and serves as the determining factor in the evaluation. Do not attempt to clean it; this will damage the metal and reduce the value of the coin.

There are several other ways to clean old copper coins. For example, cut a lemon in half and stick it into the flesh of the product. After 15 minutes, remove and brush. Rinse with cold water and wipe dry with a soft cloth.

A good result is ensured by this remedy: mix flour with coarse salt. Add 1 drop of vinegar. Apply the paste to the metal and rub gently. After 3-5 minutes, rinse with running water and pat dry with a paper towel. If you are not satisfied with the result, use the professional Reinigungsbad product from Leuchtturm.

The following methods are designed to eliminate blackening, greening and oxidation.

Pass a third of a bar of household soap through a grater and combine with 500 ml. hot water. Dip the artifacts into the solution and time it for a quarter of an hour. After a specified period of time, the plaque will peel off; all that remains is to completely rinse the coins with a sponge.

No. 2. Lemon

Drill the citrus in half. Insert the products directly into the soft part and wait a third of an hour. Then remove, scrub with a toothbrush, rinse and dry.

No. 3. Vinegar

Protect your skin with gloves. Start clearing the coins one by one. Place each of them in your palm, pour vinegar over them and rub with your fingers. Finally, don’t forget to rinse your items. As a second option, you can take ammonia.

No. 4. Salt/soda

Since there is a simple way to clean coins from rust and oxidation, we recommend using it. At home, everyone has soda or salt. Measure out 2 tbsp. l., combine with 200 ml. hot water. Soak the artifacts in the solution, after half an hour, rub and rinse.

No. 5. "Coca Cola"

Cleaning is carried out similarly to the previous method. It is enough to immerse the artifacts in soda for 20-25 minutes. After a specified period of time, clean with a sponge and do not forget to rinse the coins.

You can remove severe rust with a solution of lemon juice. At 0.4 l. water is about 20 grams. acids. After the granules have dissolved, place the coins inside and time a third of an hour. Wipe with a sponge and rinse.

Cleaning methods depend on the sample and the extent of the damage, so proceed according to the situation.

1. If the silver is old and of the highest standard, then the blackness can be removed with ammonia. Mix it with water in a ratio of 1 to 10, soak the products for an hour.

2. If there is no alcohol, use soda (per 150 grams there is 0.5 liters of water). Immerse the coins in the warm mixture for 3 hours.

3. You can also clean it with ammonia, tooth powder/paste and soda. Combine the components in equal proportions. Apply to coins and use a brush. After all actions, rinse and dry.

4. If the exhibits are of low standard, then you will have to arm yourself with a special type of salt called “Trilon B”. Measure out 20 g, mix with 0.25 l. warm water and send the coins inside. Cleaning is carried out after the plaque has peeled off.

Important!

Since coins can be cleaned with special means that remove not only rust and oxidation, but also blackness, we advise you to buy the product and use it at home. The product is selected taking into account the silver standard.

Patina is a kind of coating that forms on copper coins after prolonged contact with air. There are several ways to remove blackness, and we’ll look at them.

1. Prepare a highly concentrated solution from soap shavings and warm it up a little. Dampen cosmetic sponges and rub the exhibits.

2. You can also clean it with ammonia. Wear gloves, place the products on your palm and wipe with a disk soaked in ammonia.

3. If the blackness is so strong that nothing helps, act differently. Combine turpentine, water, rubbing alcohol and oxalic acid. Wipe the exhibits with a dampened cotton wool until they shine.

Before you clean coins from rust and oxidation, consider effective methods. At home, they will help make the task much easier.

1. For safe cleaning, use a solution of water and 9% vinegar. For 1 l. distilled water accounts for 60 ml. vinegar. Then the coins are placed in the solution so that their surfaces do not come into contact with each other or with the walls of the container.

2. The surface of the coins must be completely exposed to the acid. This will ensure a uniform chemical reaction. To avoid stains, do not place many coins in a small container.

3. Monitor the process carefully. From time to time, remove the layers that will form during the chemical reaction. Actions are carried out several times a day. To do this, remove the coins from the solution.

4. For convenience, use a toothbrush. Don't overdo it, or you'll end up with red spots on the coins. It will not be possible to get rid of them without mechanical intervention. The method will help eliminate dirt stains and oxidation.

Before cleaning coins from rust and oxidation, it is worth mentioning that each alloy needs individual cleaning. Before carrying out the procedure at home, it is important to evaluate the quality of the metal.

Source: https://vrsl-realty.ru/chistka-kollektsionnykh-monet-domashnikh-usloviyakh-chernoty-zelenogo-naleta/

Ways to clean copper coins at home

Cleaning copper coins is a rather complex process, due to the fact that any metal can oxidize after a certain period of time. Usually vinegar, citric acid is used, or a mechanical method is used. It is necessary to choose the right product to clean a copper coin at home without damaging it or ruining a valuable piece.  

Preparing for cleansing

Various metals and alloys that are used to make coins may become coated . If we are talking about ordinary dust and dirt, then they can be easily removed using warm water from the tap and an ordinary toothbrush. But what to do if copper oxidation occurs and a green coating appears on the coins? Dealing with such a problem at home is not an easy task.

The procedure for cleaning coins from greening and oxidation, which are characteristic of old copper, largely depends on the characteristics of the alloy underlying the coin. In addition, different types of erosion require different cleaning methods, and if they are mixed up, you can damage the metal.

The main thing is that you need to clean copper carefully, since inept actions can greatly harm the coin, even more than the erosion itself.

Corrosion and dirt can penetrate even deeper into the metal, and once the coin is cleaned, all its value will be lost irrevocably, giving way to abrasions and pits.

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Corrosion can be of the following types:

• green erosion is the most common problem; it occurs as a result of copper oxidation;
• yellow plaque – formed during prolonged contact with lead objects;
• reddish coating.

Available means

In order to clean a copper coin at home, use products that can be found in any home:

• vinegar;
• flour;
• salt;
• citric acid and regular lemon;
• old unnecessary newspaper;
• toothpaste and brush that are no longer used;
• soft cloth.

Such products are often enough to clean mild to moderate plaque.

Various cleaning methods

Cleaning copper coins at home is carried out in various ways. For example, using lemon. To do this, you need to cut it in half, press a coin into the pulp of the fruit and leave in this position for 20 minutes. After this, the coin should be cleaned with a toothbrush and wiped dry with a rag. If left wet, dark spots may appear.

Cleaning copper coins with citric acid is considered the fastest way to remove plaque. To do this you will need a plastic or ceramic container, citric acid and water. Acid is poured into a container and diluted with water. The concentration is selected independently. It is necessary to stir the composition until the acid crystals are completely dissolved. The coin is lowered into the container and turned over as needed. The item is cleaned very quickly to bare metal.

For the next method, take flour and salt, mix them, adding a drop of vinegar to this mixture. Moreover, it is advisable to use coarse salt. Rub the coin with this solution and leave it for a while so that it is absorbed. After this, the coin should be washed and wiped until dry.

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Add vinegar to regular boiling water in a 4:1 ratio and stir it. Then add 2 tablespoons of salt to this solution, put a copper coin there and wait until the liquid cools. Then this item is carefully taken out, cleaned with a toothbrush, washed and wiped dry.

Copper coins can be cleaned using tooth powder or whitening toothpaste. Rub the product quite firmly, but so as not to damage the coin, and rinse. The procedure is repeated until the coin is completely clean.

Jewelry stores sell a ready-made solution intended for cleaning copper items, including coins. It is necessary to dip metal products into such a product, hold it there for several minutes and wipe dry with a cloth.

You can periodically carry out preventive maintenance - copper objects should be wiped with an old, worn newspaper. Thanks to this, they are not only cleaned, but also will not darken for a long time.

Renewal of ancient coins

From time to time the need arises to clean an antique copper coin. Rare specimens are tidied up using a soda solution, which is prepared from a glass of water and one tablespoon of soda. First, old coins are washed under running water, placed in a sieve, lowered into a container with the resulting mixture and boiled for 30 minutes. Turn off the fire and allow the solution to cool. Then the copper coins are taken out and cleaned under running water with a brush.

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To clean collectible items, use a paste-like composition of toothpaste , ordinary soda and ammonia, taken in equal proportions. Apply and clean it off the coins with a small brush.

The next method is to use a jelly-like composition of boiling water and soap shavings, into which copper coins are dipped for 2-3 days. Then they are washed and dried. For more effective treatment, you can take laundry or baby soap and add a teaspoon of soda.

Mechanical cleaning

The mechanical method of cleaning coins from plaque and corrosion is the most preferable. It is carried out under a microscope using a special instrument by experienced restorers. If an ancient coin is very valuable, then you should not clean it yourself, but rather choose a mechanical cleaning method, trusting the specialists.

Patina application

It is very important to preserve the original appearance of a copper coin, so a new patina is applied to its surface. What it is? Patina is a protective coating on coins created artificially. Thanks to the patina, such objects are protected from oxidation and erosion.

This coating is applied as follows:

• You need to take copper sulfate and potassium permanganate. The optimal proportion is one liter of water, 5 g of potassium permanganate and 50 g of vitriol. Put them in an unnecessary pan, fill it with water and put it on the fire.
• When the water boils, turn off the heat, gradually add coins into the pan, stirring the contents of the container all the time. These items should change their color.
• After this, they are taken out of the pan and carefully laid out until completely dry.
• The patina needs to be preserved. To do this, use a special solution of benzene and alcohol. The proportions are taken 1:1.
• Finally, the coins are wiped with vegetable oil.

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Thus, cleaning copper coins is a rather labor-intensive process that requires care, compliance with proportions during the preparation of compositions and holding times. If this is necessary, you can use the services of specialists. And thanks to proper care, coins can remain presentable for a long time.

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Source: https://RedSol.ru/chistka/kak-pochistit-mednuyu-monetu-v-domashnih-usloviyah

How to clean copper from green deposits

Cleaning copper coins is a rather complex process, due to the fact that any metal can oxidize after a certain period of time.

Usually vinegar, citric acid is used, or a mechanical method is used.

It is necessary to choose the right product to clean a copper coin at home without damaging it or ruining a valuable piece. 

Antique copper coins will become as good as new

Beginning numismatists and treasure hunters are often faced with the issue of cleaning copper coins. Is it possible to do this at home? You can clean antique or old coins with ammonia, vinegar, or mechanically. It is important to choose the right recipe so as not to damage the surface and spoil a valuable specimen.

Dirt and stains are a small part of the damage. More often, plaque forms on the surface. It is caused by chemical reactions that occur as a result of the interaction of money with gas exchange in environmental conditions. There are several types of plaque:

• The green coating is copper carbonate dihydroxide.
• The blue patina is copper azurite.
• Black plaque is copper sulfide and oxide.
• Red with a brown tint coating is copper oxide.

If we are talking about ancient and very expensive coins, then exercise special caution. You cannot use aggressive means, there is a risk of irreversible damage. For light contamination, use the following methods.

Soap solution for coins (extract)

It allows you to clean the most stubborn stains on the surface of metal money, but it has advantages and disadvantages. It must be said that the method is the most gentle, allowing not only to preserve the features, but also to return the coin to its original appearance, if, of course, it was not mechanically damaged.

Start any cleaning at home with a soap solution. Soaking in a paste made from soap is a more effective cleaning method. You will need:

• Laundry soap.
• Water 100–150 ml.

Grate the soap on a coarse grater, pour in water and mix the composition. After a while, when the soap swells, immerse the coins in the resulting slurry. If necessary, add water to the mixture; the consistency should be slightly thicker than sour cream.

After 2 days, remove them from the mixture, scrub them gently with a soft-bristled toothbrush, and immerse them in the soap mixture again. Please note that the prepared mixture dries out over time; add water so that the mixture does not lose its consistency. The duration of exposure depends on the degree of contamination. Sometimes it takes up to 1.5 months, which is an obvious disadvantage of this method. But the result will be excellent, and your money will not be damaged.

https://www.youtube.com/watch?v=bam1IE5TRy0

The method will help to put in order even royal coins, the integrity of which is especially important to preserve.

Cleaning coins with soda (cooking)

The method allows you to clean copper money from stains, plaque and other contaminants. You will need:

• Baking soda 3–4 tbsp. spoons.
• Water 0.5 liters.

Mix the ingredients, place coins in the container and place it on the fire. The solution should cover the coins by no more than 2–3 cm. Boil and cook the coins for about 30 minutes. Then clean them with a toothbrush using a paste of baking soda.

Cleaning coins with ammonia

Ammonia will help clean coins from plaque, blackness or greenery. The method is simple and effective. It allows you to get results within the first minutes of using the product. First, wash the coin in soapy water, and then clean it with a cotton swab dipped in ammonia. Then you need to wash it again in soapy water.

The effect is achieved due to the action of ammonia, which combines with copper particles, which provoke the appearance of black or green plaque. This method is quite traumatic for copper coins, as it destroys their integrity on the surface. Especially valuable specimens should not be abused or soaked in ammonia.

Cleaning with citric acid

Cleaning copper coins using this method is easy. Take one lemon and cut it into two parts, insert a coin into one of them for 15 minutes. Then remove and brush with a soft-bristled toothbrush. It should be rinsed in cool water.

Clean coins with toothpowder or toothpaste

The simplest and most effective way to clean copper is with toothpowder. Dilute the powder in water to a paste-like state, and then immerse a coin in it or in the paste. After 15 minutes, brush with a toothbrush.

Cleaning copper-nickel coins with vinegar

Cupronickel silver (copper-nickel) coins of the USSR are very difficult to clean. It is almost impossible to bring them to a flawless and pristine appearance, and all numismatists and treasure hunters know this. But this does not mean that cleaning money from a copper-nickel alloy is pointless. On the contrary, one should not allow such values ​​to rot and deteriorate further, but one must be prepared for the fact that the result will not be long-term.

Take the following ingredients:

• Vinegar essence 1 part.
• Water 10 parts.

Mix the components and immerse the coin in the resulting mixture; the solution should completely cover it on top. You can soak several pieces at once. Every 12 hours they must be taken out and the oxides removed with a toothbrush. From 3 to 10 such procedures are required, depending on the degree of oxidation. Cleaning ends with drying - first it must be wiped with alcohol, and then put in a warm place for several days, and only then in an album with a collection of tsarist and USSR coins.

Vinegar-salt method to clean coins

USSR coins made of copper-nickel alloy can be cleaned with a vinegar-salt solution. This method consists of several stages:

• Take a small container, pour 100 ml of vinegar into it and add 1 tbsp. spoon of salt. Stir.
• Immerse the money, previously washed with soap, into the solution so that it is completely covered.
• Next, you will be able to see the chemical reaction - the surface will begin to turn white, and its contents will become more clearly visible.
• After 10–15 minutes, you can remove the coin with tweezers, after which you carefully clean it with an eraser. If necessary, repeat the entire procedure from the beginning.

Do not heat the vinegar-salt solution under any circumstances, otherwise the coins will be completely damaged.

After cleaning with vinegar, the patina may be damaged, cavities and other uneven parts may open, you should be especially careful.

Cleaning coins at home: 8 ways to clean copper coins until they shine

Cleaning coins at home is a simple set of works, the need for which is due to the oxidation of almost any metal over a certain period of time.

Those who know the specifics of various metals, in particular copper, gold, silver, etc., are aware of the fact that the older the coin, the more oxides appear on it.

When cleaning coins made of copper and other materials on your own, without turning to specialists, you need to follow simple rules to avoid causing damage to even the oldest coins.

Do we spend money on shopping or make do with what we have at hand?

Specialized solutions intended for cleaning procedures were developed taking into account the specifics of each specific metal: copper, silver, etc. Each of the products presented on the shelves of hardware stores allows you to remove various contaminants, uneven patina, and oxides from the surface of coins.

However, in an effort to restore copper and other metals to their original radiance and purity, not everyone can afford to purchase these rather expensive solutions.

Therefore, most ordinary consumers decide to tidy up the copper surface of coins using more accessible and less expensive means.

Alternative cleaning methods suitable for use at home can clean almost any dirty copper coin.

The list of necessary funds available in most households is as follows:

• "Coca Cola";
• lemon acid;
• soap;
• electrolysis.

With the help of each of them, many ordinary consumers were able to clean the copper surfaces of coins and other products made from this and other metals without unnecessary hassle.

The algorithm for cleaning coins made of copper and silver is characterized by the same simplicity and accessibility as for similar copper products. Numerous online resources contain all the necessary information.

The following review is devoted to the task of cleaning copper coins in various ways.

Citric acid for clean and shiny copper coins

The preparatory stage consists of searching and selecting a container, the possible material for which is:

• plastic;
• ceramics.

To clean copper coins, in addition to citric acid, you also need to prepare water. The acid is poured into a container and diluted with water. Coins are dropped into the solution.

It is necessary to take into account the fairly strong aggressiveness of the solution - the cleaning process must be carried out under continuous monitoring.

From time to time the product needs to be turned over. Carelessness and neglect of this requirement can lead to the fact that the solution can clean the coin right down to the metal.

After you have managed to clean the entire surface of the product, remove the contamination completely, it is advisable to create an artificial patina.

Option #1

This cleaning method is considered to be as gentle and safe as possible for the item. As a rule, in this case, it is not household soap that is used, but neutral baby soap.

Having decided how to clean the coins, you must first grate the soap on a coarse or medium grater. Then the grated soap is diluted with a small amount of water until a homogeneous plastic mass is obtained.

To clean coins, they are inserted into the resulting soap mass. Having left the products in this state for some time, it is nevertheless necessary to periodically remove them from the water and check them, washing off layers of dirt and oxides.

Having decided to clean coins using this method, you need to understand such specifics of the approach as its impressive duration. The fact is that absolute cleansing in extreme cases can only be achieved after several weeks.

Option No. 2 (optional)

You can also achieve the desired goal by resorting to laundry soap. The process is somewhat different from the similar one described above, but it is also simple.

In this case, a plastic container is used as a container. It is filled with boiling water, into which soap shavings are poured.

After waiting for the soap to completely dissolve and obtain a jelly-like substance, the owner can dip copper coins into it, leaving it for a day or even two. The length of stay in the solution depends on the degree of contamination of the products.

After the required period of time has passed, the money must be washed using a soft brush and dried thoroughly.

Multiple repetitions of the procedure are allowed. By removing all the oxides layer by layer, you can get coins with an absolutely clean surface without any damage.

Fizzy Coca-Cola: Spend Money to Clean

The ambiguous properties of the drink, beloved by children and adults, have also found their application in the struggle for the purity and shine of hard coins.

Many people already know that it can be used to perfectly clean and shine the chrome surfaces of various products. Cleaning antique coins at home is no less successful.

So, to clean a dirty and tarnished coin, you need to put it in a container, preferably glass, and fill it with a fizzy drink. The dishes and their contents are left in this state for several days, preferably a week.

If you lack patience, the time required to clean coins can be significantly reduced. To do this, the dishes are placed on a radiator or other safe and effective heat source. The essence of the approach is that increasing the temperature speeds up the reaction.

It is possible to tidy up an old coin using the presented method due to the content of a small amount of orthophosphoric acid in the sweet drink. If the contamination is much more serious, you will have to resort to more radical methods.

Electrolysis method

Those who paid due attention to physics lessons are familiar with this concept from school. Its usefulness when processing coins will be ensured if the following two important rules are observed:

• compliance with safety regulations;
• testing the method on inexpensive items in order to avoid damage to more valuable products.

It is worth paying special attention to the second point of the operating principles: the fact is that sometimes, due to a minor mistake, serious, irreparable damage is caused to a coin or other valuable item.

Old coins are restored to their purity and shine through the use of a small power supply (6-12 Volts). As such, a universal charger can be used. Another alternative: an old mobile phone charger.

The following are attached to the power supply or its alternative:

• two alligator clips;
• some small metal object (not copper or brass is recommended);
• deep dishes made of glass or ceramics.

A saline solution is also used, prepared in compliance with the following proportions: 1 tablespoon of salt per 1 liter of water.

The process is simple, you just need to follow all the steps exactly. One clip - with a minus sign - is attached to the specimen, while the opposite one - with a plus sign - is attached to a metal object.

Then the coin and the metal product are lowered into a pre-prepared container where the saline solution is located, while the power supply is plugged into the outlet.

The result makes itself known quite quickly: the process of dissolving oxides and dirt leads to rapid clouding of the solution. The “bathing” period is short, after which the specimen is washed with hot water and dried.

A little care and precision in following all steps will allow you to achieve the desired results.

Mix of soda and soap

If you want to achieve the desired cleanliness in the shortest possible time, then the soap method can be enhanced by using soda. However, you need to add soda already in dissolved form.

Having completed the cleaning, the coins must be rinsed thoroughly, and then lubricated with alcohol and Vaseline ointment. The last step provides maximum protection against the appearance of new contaminants and oxidation.

Method with oil

In this case, you need to boil the coins in an oil solution. The best option: use Vaseline oil. The boiling process must be completed until the coins are completely clean. Last step: rinsing in ethyl alcohol.

Edge Cases

If the coin is brought to an extreme state: it is unusually heavily soiled, you can resort to caustic soda. The product must be handled very carefully; it must be diluted in cold water.

Since this product is inherently a strong alkali, it is recommended to avoid contact with it. You need to lower the product into this solution using tweezers. Residence time in the solution: no more than ten minutes, after which the coins are removed and washed.

However, not all coins can handle this method. If a green or blue stain is noticed on their surface, the cleansing process must be interrupted. If you have a negative reaction, you should not use this method on already tested products.

Having studied various methods of cleaning coins and choosing the optimal one, you need to maintain the accuracy of each step.

It is also necessary to take care of your own safety - especially when using certain methods.

Clean, shiny and sparkling coins delight both connoisseurs and connoisseurs of these products, as well as ordinary users who, for one reason or another, are interested in cleaning reused coins made of copper and other metals.

Source: https://adella.ru/home/cleaning/chistim-monety-v-domashnih-usloviyah-elektroliza.html

How to clean coins from rust and oxidation at home?

Like any metal product, coins become dull and black over time, and if exposed to excess moisture, become covered with rust. Basically, this problem is faced by numismatists who need to maintain their collection in decent shape. To restore shine to coins and remove oxides and dirt, you can use professional or home remedies. The latter attract collectors with their accessibility and simplicity.

If you clean coins incorrectly, they can simply be ruined. Therefore, it is important to correctly determine the material from which they are made, and after the procedure, dry them correctly.

How to clean coins at home?

Home methods for cleaning rusty old coins involve the use of readily available products: vinegar, ammonia, citric acid.

Copper coins

Cleaning copper coins is done using the following home methods:

• Grate 50 g of laundry soap 72.5% and dissolve in 1 liter of warm water. Soak the coins in this solution for a quarter of an hour. Then rub them with a sponge;
• Citric acid will clean copper products to a shine if you prepare a concentrated solution of it. For 2 glasses of water you need to take 4 tbsp. l. acids, stand for 20 minutes;
• The method of cleaning with ammonia is quite effective. You need to either soak a cotton swab in ammonia and wipe the coin, or dip it in undiluted liquid for 10 seconds.

Green spots indicate that the surface has oxidized. Most likely, the coins were damp or in the ground for a long time. To get rid of green plaque, you need to prepare a vinegar solution. Take 40 ml of table vinegar for 1 liter of water. Let the coins sit for exactly one hour, then rub them with a soft brush.

Advice! If the dirt is not completely removed, continue soaking in the vinegar solution, making sure that the edges of the coins do not touch each other.

Blackening indicates that the metal is very old. You can clean the surface from blackness using a regular lemon. Fresh fruit is cut lengthwise into 2 halves, and coins are inserted directly into the pulp for 15-20 minutes. Fruit acids will cope with pollution.

Copper is one of the most common materials used in coinage. For products made from other metals, alternative cleaning methods are used.

Silver coins

Cleaning silver coins at home is carried out according to the following recipes:

• Cover a wide-bottomed dish with foil. In a separate container, mix table salt and boiled water in such proportions as to form a paste. Place some of the mixture on foil, place coins on it, and cover them with the rest of the mixture. Leave for 2-3 hours, then carefully remove and rinse. You should not rub coins, otherwise you can scratch them with salt.
• Heat 9% table vinegar to a temperature of 36-37°C, soak a cotton swab in the liquid, and remove dirt with quick movements.
• Mix hot water and baking soda. The resulting mixture should have a thick consistency. Gently rub the contaminated areas with it, rinse the coins with water;
• A more aggressive way is to mix soda not with water, but with ammonia. Ammonia perfectly cleans silver of any quality.
• Cleaning with Trilon B, it is a white powder. For 100 ml of water you need to take 1 tsp. product, soak a cotton swab in it and spot treat the most contaminated areas.

Care must be taken when cleaning with citric acid. Add 20 g of powder to 100 ml of water at room temperature and completely dissolve. You can immerse coins in liquid for no more than 1 minute, then rinse with running water.

Advice! Before the cleaning procedure, it is recommended to carry out preliminary preparation: place the products in hot water to remove surface dirt.

Antique pieces made of pure silver can be treated with a special compound, which can be easily purchased at a jewelry store. It is necessary to explain to the consultant that it is planned to process silver products.

Bronze coins

Cleaning bronze coins at home is not a problem. Here are some proven recipes:

• Dilute citric acid in a ratio of 7:3. This means that for 7 parts of water you need to take 3 parts of citric acid powder. Immerse coins in the solution for 10-15 minutes, then remove and carefully peel off dirt. After this treatment, the plaque comes off easily.
• Vegetable oil, you can take regular sunflower oil, heat it up and put the coins in for 5 minutes. After this time, rinse with hot water and soak in rubbing alcohol for a couple of minutes. You must work with hot oil very carefully so as not to get burned.
• The standard method is to prepare a concentrated soap solution from laundry soap 72.5%. For a liter of hot water you will need to take 50-60 g of soap and grate it on a coarse grater. Place coins in this solution for 15 minutes, then rub the softened dirt with a sponge.

It should be taken into account that after high-quality cleaning, defects appear that were previously invisible. These are scratches, cracks, deformation of the design and other possible damage. The task is not to aggravate them with too aggressive treatment.

Aluminum coins

Aluminum products develop a grayish coating - an oxide film that protects the metal from further destruction. If you remove it completely, the coin will become stained and look even worse. Therefore, the task is to make the film thinner using non-aggressive means.

Cleaning aluminum coins at home is carried out in the following ways:

• "Coca Cola". It needs to be poured into an enamel bowl, filled with coins, and kept for at least 12 hours. It is most convenient to carry out the procedure at night, and if the result is not satisfactory, it can be repeated.
• Grate children's toilet soap and dissolve in hot water until rich foam forms. The required proportions are 50 g of soap per 0.5 liter of water at a temperature of 40-41C. Baby soap is not as aggressive as laundry soap, but it does a good job of removing darkening. The disadvantage of this method is that it takes a long time. It may take a week for good results. Soak the coins in the solution and periodically remove and wipe them.
• Using citric acid or fresh lemon juice. Citric acid dissolves in water at room temperature in the amount of 1 tbsp. l. per 100 ml of liquid. An alternative is to squeeze the juice of fresh lemon and dip the coins in it. The duration of the procedure in both cases is 20 minutes. Another effective way is to dissolve 50 g of borax and a tablespoon of ammonia in a liter of water. Borax is a dry white powder - the sodium salt of boric acid. Aluminum products should spend a quarter of an hour in this solution, then they are washed with running water.

Bimetallic coins

Bimetallic coins are coins whose central part is made of one metal and the surrounding ring is made of another. They can be difficult to put in order, since corrosion can only affect one type of metal, and the second is at risk of tarnishing during processing.

Cleaning such coins at home is carried out with 9% table vinegar. The liquid should be poured into a wide, shallow bowl, and coins should be placed at the bottom, at some distance from each other. They must be removed no later than two minutes later.

If the contamination is not very strong, a soda solution prepared in the proportion of 40 g of soda per 200 ml of hot water will help. The products are kept in the liquid for 10 minutes.

Another way to clean bimetallic 10 rubles is to rub them with toothpaste. Any paste is suitable, there is only one obligatory condition - it must be white, without dyes. After the procedure, the coins must be thoroughly rinsed so that no white dried particles or stains remain.

How to clean USSR coins

For the production of USSR coins, an alloy of copper and aluminum, copper and zinc, as well as copper, zinc and nickel was used. Now they are a collectible value, and without proper care they quickly lose their shine and become covered with rust.

Cleaning Soviet coins at home is carried out using a mixture of baking soda, toothpaste and ammonia solution. The substances must be mixed in equal proportions, apply the mixture to a napkin, and carefully treat the contaminated surfaces, then rinse the coins with running warm water and wipe with a clean cloth.

Cleaning brass coins is carried out with ordinary soapy water. Both baby and laundry soap will do.

Approximately 30 g of the substance is grated and dissolved in 0.5 liters of boiling water. You need to soak the coins in this solution for 30-40 minutes, then take them out and gently rub them with an old toothbrush.

The purpose of cleaning cupronickel products at home is to rid them of a reddish coating. To do this, the following procedure is carried out: you need to take an enamel container, cover its bottom with foil, and sprinkle it thickly with baking soda. Lay out the coins and pour in a small amount of boiling water, leave overnight. After 10-12 hours, rinse with warm water. If necessary, repeat 2-3 times.

Copper-nickel specimens are perfectly preserved in unfavorable conditions and aggressive environments. Even if they are found in the ground during searches, various types of corrosion on products are observed in a minimal form. You can get rid of them using a vinegar-salt solution. Dissolve 1 tsp in 50 g of table vinegar. salt, and keep the coins for 5 to 20 minutes.

Drying coins after cleaning

Regardless of which cleaning method you choose at home, coins must be properly dried to prevent corrosion from occurring again.

The easiest way is to wipe the cleaned items dry with a soft cloth; microfiber or flannel will do. It is not recommended to rub the surface intensively, since even the most delicate material can leave scratches invisible to the eye.

It is recommended to wrap bronze specimens first in a thick paper towel and then in a clean cloth. This will be enough to absorb excess water.

There is a simple method for knowing that coins have been properly cleaned and are ready for drying. They need to be placed in water and one drop of silver azonate solution added. The water should remain clear.

Collectible items can be dried in a special drying cabinet at a temperature of 100°C.

Which coins should not be cleaned?

If your home collection contains particularly valuable, expensive and rare specimens, it is better not to take risks and not clean them yourself at home. Especially if they have chips, deep scratches, unevenness or potholes. In this case, it will be enough to remove dirt with running water and dry the coins properly.

The value of a coin depends not only on its purity, but also on the preservation of the relief. Rough mechanical and chemical cleaning can smooth out important parts and create scratches, bumps and dents.

If you need to bring the most valuable coins in your collection into maximum order, it is best to entrust this to a professional restorer. For example, museum workers have a lot of experience.

When carrying out cleansing procedures at home, it is important to follow safety precautions and prevent ammonia, vinegar and other hazardous substances from getting inside the body or on mucous membranes.

Source: https://chistsovet.ru/chistka/kak-ochistit-monety-ot-rzhavchiny-i-okisleniya-v-domashnih-usloviyah/

How to clean a copper coin at home? — I am a collector

To become an experienced and professional numismatist, you need to be able to understand many things. The fact is that numismatics includes many subtleties and details that are important when collecting rare and valuable items.

Regardless of the experience of a numismatist, every collector should know how to clean copper coins at home. This process is simple, but has its own nuances. Cleaning metal products is necessary if coins have a certain level of dirt, oxidation or plaque. To give the collection a decent look, you need to protect the metal surface with a layer of patina. Then the specimens acquire shine, and the engraving details are clearly visible to the naked eye.

Now the topic of how to clean copper coins at home is very relevant among numismatists. The fact is that the opinions of some experts in this case differ. Some say that substances can destroy the appearance of metal products, while others, on the contrary, say the opposite.

If you use untested methods and dubious detergents, then there is indeed a chance of damaging the appearance of the coins. In this case, you need to take a responsible approach to restore the original appearance of the products.

It’s also worth thinking in advance about how to clean a copper coin at home.

Soviet coins

During the years of the USSR, a huge number of different coins were issued. Several dozen factories operated throughout the country, diligently producing metal products for the population. More than a decade has passed since their release, so their appearance has changed slightly. The value of such coins instantly drops in the market if they are not properly cared for.

Each copy that was released in the Soviet Union has its own history. To preserve the memory of bygone years, you need to know how to clean a copper coin at home.

Experts do not recommend using chemical compounds without certain skills. It is worth noting that suitable drugs are not so easy to find. But there is an opportunity to make your own mixture at home: ammonia, soda and toothpaste. This composition effectively and quickly copes with contaminants.

In addition, this mixture can be prepared in large quantities and packaged in a well-protected container. The mixture must be stored covered so that the beneficial properties do not evaporate. After applying the composition to the surface of the coin, it is necessary to rub it with a brush and rinse with warm water.

At the end of the procedure, the coins must dry thoroughly.

To remove varying degrees of contaminants, you can use water and soda. The mixture must be poured into a clean container and a coin placed there for two hours. During this time, the surface will be cleared of dirt and become shiny. Then you need to wash all metal products and dry them.

Also, some coin collectors use another effective method, which is as follows: one teaspoon of citric acid, a glass of warm water. This composition needs to be stirred well, and then a metal product should be placed there for a minute. Then you need to quickly take out the coin and wipe it with a dry cloth. It is important to remember that the coin should not be left in the solution for a long time, otherwise it may deteriorate. In this case, the specimen will completely lose its shine.

Copper exhibits

How to clean copper coins? Even from such metal, you can clean the surface of products at home. At the same time, everything can be done without damage.

You should adhere to the following instructions:

1. First you need to prepare a solution consisting of laundry soap. Before this, you need to cut the soap into small shavings and put it in a container with boiling water. Then you need to wait until the soap is completely dissolved in the water. And only then can you put metal products in a container for two days. From time to time it is worth cleaning the surface of the coins with a brush. Upon completion of the procedure, each coin is dried and washed. If necessary, you can repeat the procedure. As a result, the oxides should disappear from the specimens, turning the coins into a sparkling collection.
2. How to clean copper coins at home? It's very simple, just take a soap solution and add soda to speed up the process. It is worth noting that you should first mix soda with water. After these steps, each coin must be lubricated with alcohol and Vaseline for shine. In this way, products can be protected from contamination and oxidation.
3. Renewing the appearance of metal products can be done using citric acid. To do this, you will need to immerse the coins in the solution for half an hour, and then wipe them dry with a soft cloth. It is possible that the metal may acquire a pink tint, but after thirty days it will disappear.
4. How to clean copper coins at home to get rid of the problem quickly and effectively? You can dip coins in boiled Vaseline oil for half an hour. In general, you need to boil metal products until they are completely clean. Then, if necessary, rinse again in ethyl alcohol.
5. If the specimens are in poor condition, they must be handled very carefully. In this case, you can use caustic soda, having previously dissolved it in water. To avoid getting burned, you need to prepare for cleaning by wearing special gloves. To work, you will also need tweezers, with which you will need to dip coins in the solution. It is worth remembering that not all types of coins can withstand strong alkali. If the coins begin to turn blue or green during the cleaning process, then you need to interrupt this method.

Now every numismatist knows how to clean a copper coin at home. The main thing is to follow certain instructions, then the coins will be in perfect order. And then there will be no problem with how to clean copper coins at home?

Bronze exhibits

Most methods for cleaning bronze coins from dirt are similar to methods for cleaning copper products. It is also possible to use citric acid and soda. The following composition is acceptable for use: Trilon, ammonia, water and toothpaste. Properly used substances will help quickly get rid of darkening on specimens.

It is not recommended to use nitric or sulfuric acid. In this case, the acid will only be useful when cleaning inexpensive coins that are in poor condition. At the end, the surface can be smeared with sulfur ointment for shine.

The procedure includes the following steps: Vaseline ointment and sulfur ointment are applied to the coin and all this is smeared over the entire surface using a toothbrush. Finally, rinse the bronze items with warm water.

Thus, the coin is covered with a protective layer that protects the material from oxidation. Residues from the oil can be washed off with running water.

Cleaning antique coins

If you have old coins in your collection, they should be treated with vinegar and toothpaste. To ensure that the composition lies evenly on the surface of the coin, you must apply it carefully with a toothbrush.

It is better to use this tool in a circular motion to remove plaque on the surface. Experts advise immersing the product in a container with vinegar for just about twenty minutes.

You should not leave coins in the solution for a long time, otherwise the coins will become unusable. At the end of the procedure, you need to rinse them thoroughly in water.

As a rule, pieces of earth get stuck in coins of the imperial period, which negatively affect the appearance of the products. Experts advise boiling exhibits in water and soda. But before the process you should prepare: one tablespoon of soda per 200-300 ml of water. You need to boil for no more than 30 minutes. Although this procedure can be repeated until maximum results are obtained.

If it comes to silver coins, then it is possible to use ammonia with water. The coins are placed in the liquid for sixty minutes. It is worth noting that if you don’t have ammonia at home, it doesn’t matter, because you can always replace it with soda.

It is important to remember that after each procedure, all specimens must be thoroughly dried. The fact is that the appearance of the collection depends on this.

Source: https://yacollectioner.ru/kak-ochistit-mednuyu-monetu-v-domashnih-usloviyah/