How to Clean a Copper Antique Coin

How to clean a copper coin from green, black or white deposits?

Ancient copper coins have a unique beauty, but only until they darken. But this shortcoming can be corrected using available means. Moreover, this will not harm the metal.

So, if you have a question about how to clean a copper coin, you need to go straight to the kitchen! To begin with, stock up on salt, flour, vinegar, lemon and hot water. Then go into the bathroom, grab toothpaste and a brush. Also find an old newspaper.

Take an ammonia solution from the first aid kit. Now you are armed and ready to clean your antique copper coin.

Cleaning process

Before you clean old copper coins, you need to find out what kind of oxide layer is on the coin. The verdigris is harmful to the copper coin. This is a toxic oxide layer that reacts with oxygen in the air. The result is strong oxidation that is difficult to remove.

In addition, there is a layer of oxide, which is called patina. The peculiarity of this layer is that it does not spoil the coin, but rather protects it from the negative influence of gases in the air. Patina forms when a coin is left in the ground and in the air for a long time. Under no circumstances should the patina be removed from the coin. Its presence indicates authenticity.

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Before directly cleaning coins from oxide, you need to remove a layer of earth and dirt from it. To do this, wash the coin with soapy water and wipe dry.

So, you can finally clean the coins in the following ways:

1. Cut the lemon in half. Stick a coin into the pulp and after about 15 minutes, take it out and clean it with a brush. Rinse in cold water and wipe dry with a soft cloth.
2. Mix coarse salt with flour and add a drop of vinegar. Rub the coin with this mixture and leave for a while. Rinse under running water. Wipe dry. (Copper must always be wiped dry, otherwise dark spots may immediately form).
3. Add vinegar to boiling water. The concentration should not exceed 25%. Add 2 tablespoons of salt to the solution and drop a coin in it. When the solution has cooled, carefully remove the coin and clean it with a toothbrush. Rinse with clean water and wipe dry with a cloth. When cleaning multiple coins at the same time, be careful not to let them touch each other. Be careful when using this method to avoid poisoning from the fumes from the bite.
4. Rub toothpowder or whitening toothpaste onto a wet coin. You need to rub hard and actively. Rinse the coin and evaluate the result. If the coin is not sufficiently cleaned, repeat the procedure again.
5. You can use a jewelry cleaner. You can buy it at a jewelry store. To clean an old copper coin, simply soak it in the solution for a few minutes and then wipe it with a cloth.
6. If you are afraid of harming the rarity, then you can clean old copper coins in a jewelry workshop using special means. They will also be able to polish them and even apply a special coating that prevents copper from darkening.
7. In order not to ask yourself every time how to clean copper coins, you can resort to preventing darkening. To do this, you need to rub the coins with an old crumpled newspaper.

There are also some ways to clean coins, depending on what the coin is coated with, what kind of compound.

How to clean coins covered with white coating?

The white color indicates an admixture of zinc alloy in the copper. In this case, the most gentle cleaning method is distilled water. Place the coin in it for a couple of days. Perhaps the copperhead will come out in green flakes, then it can be removed with a toothpick or a toothbrush with soft bristles.

How to clean black and green from the surface of a copper coin?

The coin is wiped with a cotton swab dipped in ammonia, and then rinsed in a soapy solution. Ammonia reacts with copper compounds, which produce green and black deposits, resulting in a water-soluble complex that is easily washed off.

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Source: https://med-post.ru/kak-ochistit-mednuyu-monetu

How to clean coins at home - methods for cleaning antique, copper, gold and silver coins

Collecting coins is a very exciting activity. However, despite their apparent durability, these collectible exhibits require care. If they are not cleaned as needed, they may lose their value.

In this article we will touch on the question of how to properly clean. In order to do everything correctly, it is enough to simply do everything carefully and consistently.

Types of cleaning

First, we will talk about the methods of influence on which the cleaning process itself is based. Typically there are four main options:

• Cleaning using mechanical action: For this, both ordinary pieces of cloth and other tools (for example, a scalpel) are used. When using such methods, there is a high probability of damage, although their use is quite effective.
• Use of chemical influence:
  • As one option, you can use a solution of ammonia.
  • You can use a solution of citric acid.
  • When using hydrochloric acid solution, special care must be taken. After completing the process, you need to thoroughly rinse the coin and additionally treat it with alkali to neutralize the effect of hydrochloric acid.
• Cleaning during cooking: You can cook it, for example, in olive oil. This represents only part of the entire cleaning process. This method is described in more detail below.
• Using electrolysis for cleaning: This method is very effective, but if used unprofessionally, it can damage the collectible item.

Features and rules for cleaning gold, silver, bronze and copper coins

Of course, different approaches need to be taken for different species. To clean more valuable and expensive items, aggressive methods that can damage the surface should not be used.

An important factor that influences the choice of method is the material from which the coin is made. Let's talk about this in order:

1. How to clean gold specimens? The optimal choice in this case involves the use of a soap solution. Extreme care must be taken when cleaning them. After all, even the fabric with which they are wiped can leave scratches.
2. Cleaning silver coins. First you need to understand how valuable it is. To do this, the standard of silver and the fineness of the design are taken into account. What to do if we are dealing with a high-quality and expensive silver coin? In this case, it would be reasonable to use a weak solution of ammonia. If you use boiling and complete the cleaning with a soft brush, then this is also quite acceptable in this case.
3. Cleaning copper specimens. If we are talking about cleaning copper products, then we need to distinguish between 2 main options. If they have high historical value, then it is better to use gentle methods or contact specialists. If we are talking about a relatively cheap specimen, then the use of effective, but at the same time aggressive methods can be considered reasonable. This is especially true if they have a thick layer of corrosion. Before you start cleaning them, you need to use a soap solution to remove any traces of fat present here.
4. Aluminum coins. They are usually covered with a special protective layer that protects them from possible damage. They are usually cleaned when they want to be exhibited or sold. To clean them, it is best to use ammonia or a weak solution of citric acid.
5. Bronze copies. If you use ammonia when cleaning them, they can change their color to a darker one. In this situation, it makes sense to use toothpaste. You need to spread it, rub it lightly, and then wash off the paste. Drying should be done by wrapping it in a cloth or paper towel, otherwise the coin may become dull.

To clean aluminum coins, it is best to use ammonia or a weak solution of citric acid.

Tools and cleaning products

You can use various tools for cleaning:

• Pieces of fabric.
• Soft brushes.
• Toothbrushes.
• Bath for preparing the solution.
• Wooden toothpicks.
• Scalpel.
• Other tools.

The following reagents can be used:

• Lemon acid.
• Vinegar.
• Hydrochloric acid.
• Toothpaste.
• Soapy water.
• Soda.
• Other reagents.

Preparing for cleaning

• First we clean it from dirt. To do this, you need to keep it in water for some time. You need to clean it carefully, as there may be abrasive materials.
• Next, you need to wash the coin thoroughly.
• After this you need to degrease. This completes its preparation for cleaning.

Clean with care as there may be abrasive materials.

Various cleaning methods

In this section, we will talk in detail about the various methods that are used to perform cleaning:

1. First you need to measure out the required amount of soda, then add water and make a paste.

   For cleaning, you can use a solution of ammonia:

   • In order to process a coin, it must be placed in this solution for several tens of minutes. The time of this process depends on the degree of contamination.
   • After it becomes clean, it must be rinsed with water and dried.
2. For the same purpose, you can use a bath with a solution of citric acid in a similar way . The effectiveness of the cleansing action in this case will be the same as in the previous case.
3. It is quite possible to use a stronger acid for chemical cleaning. So, if you place a coin in a bath with a solution of hydrochloric acid, the cleaning will be more effective. However, after completing this process, you will need to thoroughly rinse it with water and then neutralize the possible residual effect of the acid using an alkaline solution.
4. It should be noted that vinegar can be used in a similar way..
5. The coin can be cleaned using a soap solution:
   • To do this, you need to make a warm soapy solution and place the specimen in it for 2 – 3 hours. If it is heavily contaminated, you can keep it in the solution for 24 hours.
   • After completing this treatment, for additional effect, you can additionally rinse with dishwashing detergent.
   • After this, the coin must be thoroughly rinsed with water and dried.

Some methods are used only in certain cases. The following option will only be effective for copper or silver specimens of low purity.

We are talking about one of the cleaning options using soda. In order to use this method, you first need to make a paste of soda and water. It is done as follows:

• First you need to measure out the required amount of soda.
• Then add just a little water there.
• You should get a paste that is applied to the surface.
• In just a few minutes you can move on to the next step.
• To do this you need to use a soft brush. Carefully clean the coin with this brush.
• Then it needs to be washed in water and dried.

This method is called alkaline cleaning. Let's talk about another cleaning method using vinegar or citric acid:

• In order to control the concentration of the resulting solution, you need to throw an ordinary coin into it and take a closer look at the extent to which the resulting solution will affect it. First, you will need to prepare a bath with the solution. Additionally, you will need to add a little soda.
• In order to control the concentration of the resulting solution, you need to throw an ordinary coin into it and take a closer look at the extent to which the resulting solution will affect it. If no damage occurs to this coin, the solution can be used to clean collectible coins.
• This option is considered quite aggressive for them. If you make a solution that is too concentrated, coins made of silver, gold or copper may change their color.

We'll tell you how to treat items with ammonia:

• When cleaning using this method, you simply place the coin in this solution.
• After some time, you will need to remove it from the solution and check the quality of cleaning.
• If it is not enough, then the procedure must be repeated. The duration of the procedure depends on the degree of contamination.

The electrolysis method is quite controversial. On the one hand, its efficiency is quite high. On the other hand, it can be classified as an aggressive cleaning method. Therefore, in each specific case, you need to weigh all the circumstances and only then make a decision.

How to do this practically:

• To do this, place the coin in a lightly salted electrolytic solution , then apply an electric current.
• Even if we talk about the most severe stains , it is quite possible to get rid of them in no more than 3–4 hours. However, due to the high risks, this method is best left to the professionals.

One of the methods is implemented using digestion:

• In this case, you need to boil the coin in olive oil for 10 minutes.
• After finishing, the coin is removed and washed thoroughly with water and soda.
• Then you will need to brush it.
• After this is done, you will need to boil it again, but in distilled water.

For cleaning, you can use a solution of ammonia.

How to dry coins correctly

It is best to dry by wrapping the coin in a cloth or paper towel. Remember that some types may change color if air dried.

What coins should not be cleaned at home?

When cleaning, it is very likely that as a result of carelessness or choosing an aggressive cleaning method, the coin may be damaged. In some cases, this risk can be considered acceptable.

However, if it is made of precious metals or has special historical value, then extreme care must be taken when cleaning it. In this case, turning to professionals would be a wise choice.

Tips and tricks

• If you are going to start cleaning coins, think about whether it is necessary? In addition to the fact that this will require some effort, there is, albeit minimal, the risk of damage. On the other hand, some traces of time can decorate a collectible coin. The patina on it, in addition, actually serves as a protective layer and helps to preserve it.
• It is not recommended to use detergents to clean dishes when cleaning. They work effectively, but at the same time, the product can corrode the image.
• Cleaning should be done using surgical or cotton gloves. This will greatly reduce the risk of scratches during the cleaning process.

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Source: https://srazuchisto.com/uborka/ukrasheniya/chem-pochistit-monety.html

How to Clean Copper Coins

 You can clean copper coins from dirt and greens at home. Unfortunately, the best way can only be found by experimenting with cheap coins. When working with copper, you must be as careful as possible so as not to damage the coin.

 Next, we will look at the most common ways to clean copper coins.

 Cleaning with vinegar

 Very often, copper becomes covered with a green coating, especially if the coin was taken from the ground and was not protected from oxygen in time. To get rid of green plaque, prepare a vinegar solution; for this you need to take a glass of water and a tablespoon of vinegar. Place a coin in it and wipe it with a cloth from time to time.

 Ammonia

 Ammonia can remove reddish deposits. To do this, place the coin in a solution of ammonia for 10-20 seconds. The coin must be completely immersed in the solution and not in contact with air. To pull out a coin, add water to the container, thus diluting the solution.

 Lemon acid

 Royal copper coins can be cleaned with citric acid. To do this, dilute 1 gram of citric acid in a glass of water. Citric acid will help get rid of the green on the coin. It dissolves salts and oxides, but do not overdo it so that you do not end up with a bright coin.

 Kefir or ayran

 These dairy products contain acid, which eats away dirt; however, this cleaning method is quite lengthy and will take several months.

 Soap solution

 One of the simple and affordable ways to clean old copper coins at home is to soak them in a soapy solution. To do this, you need to grate laundry or baby soap, pour boiling water over it, let it sit until a liquid slurry forms and wash the coins in it.

  How to Clean Bronze Coins

 For severe stains, you can scrub with a toothbrush.

 Olive oil

 One of the most harmless ways is to soak a coin in olive oil. If necessary, try cleaning it with a toothbrush.

 Silbo Coin Cleaner

 You can clean a copper coin from dirt and rust using a special professional product Silbo. The coin must be kept in the solution for about 3 minutes, then removed and rinsed under water. This product not only removes plaque, but also forms a special protective layer on the coin.

 Mechanical cleaning

 Mechanical cleaning involves cleaning heavily soiled coins with special tools - scrapers. Only specialists do this kind of work; it’s better not to risk it yourself.

 As you can see, there are different ways to clean coins; you need to choose the one that does the least harm.

 If you use chemicals or acids, they can remove the patina that has formed and reveal defects such as scratches and dimples. After such cleaning, the coins become bright in color and because of this their value may fall.

 If you have never cleaned coins before, and the coin is quite expensive, then it is better to find a specialist who will carry out professional cleaning.

Source: http://monety.in.ua/chistka-monet/360-kak-chistit-mednye-monety

Cleaning ancient and modern coins at home

In order to return coins to their original appearance, you do not need the help of professionals, because almost any contamination can be removed yourself. How to clean coins at home without much effort, without damaging the product itself?

First, it’s worth understanding what the most common metals from which money can be made are.

Basic alloys and metals

Typically, products are minted from several metals. Each type has its own most suitable cleaning method.

• The most expensive metal is platinum. They were first released in the Russian Empire;
• Gold money began to be produced almost from the time of its invention;
• Silver specimens have been made since the 6th century BC;
• Copper has been used for coinage since antiquity;
• Tin is used as a constituent of alloys;
• Nickel coins began to be produced in 1850;
• Zinc money has been made since World War II;
• Aluminum money appeared at the end of the First World War;
• Iron money began to be issued back in the 16th century BC;
• Bronze.

Cleaning can be done both mechanically and chemically.

Cleaning using bristle brushes of varying degrees of hardness is called mechanical. It is strictly forbidden to use metal objects. This method is used to remove dirt and dust, being careful not to damage the surface.

In case of extensive contamination, dry cleaning with various oxides is used, which differ depending on the material of manufacture.

The most common household cleaning products

Each alloy has its own, most suitable cleaning methods.

• The easiest and safest way to remove surface stains is to use soap and water. It is better to use baby or laundry soap. To do this, you need to place the products in the soap mixture for some time. Then take them out and rinse them in running water and rub them with a brush. If it doesn’t work the first time, you can repeat this method or crush the soap and make a paste out of it and water. Place the money there for several days, then rub it with a brush.
• Regular toothpaste cleans metal money quite effectively. You need to spread the paste on them and rub them with a brush.
• Citric acid will remove even stubborn stains, but this method should be approached with extreme caution, as it can damage the surface.

Source: https://domopravitelnitsa.com/uhod-za-veshhami/chistka-starinnyih-i-sovremennyih-monet-v-domashnih-usloviyah.html

Old copper and silver coins: ways to clean them from dirt

People began collecting coins several centuries ago. Ancient coins captivate with their magical beauty. But over time they change their appearance. They may darken or become coated. Holders of valuables want to see their coins shiny, with clearly defined minted lines on their surface. Collectors are faced with the question of how to clean coins without damaging them?

Before cleaning expensive old coins, you need to determine the alloy from which the valuables are made. This will be the main criterion when determining the means for wiping off dirt.

How to clean coins at home?

Not all coins are suitable for cleaning . It is strictly forbidden to clean collectible coins that have a special coating. Their value lies in the top layer. Under the influence of a chemical reagent or other factor, they can turn into a useless thing. Because of this, coins are not subject to sanitary treatment, except for wiping with distilled water.

The rest can be cleaned. But they should not experience mechanical stress. Do not clean with powder or scrape with sharp objects! You can damage the coinage and the item will depreciate in value.

You can clean coins using gentle chemical methods. But here too there are some features, ignoring which can lead to damage to the surface of the product. The main thing in the cleaning process is not to overdo it; you can remove the noble patina . It is she who emphasizes the age of value.

How to clean copper coins?

There are many ways to clean copper products. But the most gentle way is the following:

Cleaning copper coins with soap

This method is considered the safest. But it has a drawback - it will take a lot of time to put the coins in order. Sometimes it takes months or even years to clean. Soap solution is a slightly alkaline medium and therefore very slowly dissolves copper oxides on the metal surface.

Preparation of soap solution

To prepare a solution in which copper coins or other copper objects coated with oxides will be cleaned, use baby soap or laundry soap. Grate it and pour boiling water over it. After an hour and a half, the solution will thicken. Its consistency will be similar to that of toothpaste.

Cleaning process

Coins should be immersed in the prepared solution one at a time. This will ensure that each one is evenly coated with soap. You can leave them in a soapy solution for at least a day, but usually leave them for a week.

Next, they are taken out and washed with warm water. Plaque can be removed with a hard-bristled toothbrush. If green stripes remain, the process is repeated. The solution is suitable for use several times. Usually the desired result is not observed the first time. It is achieved only after the third time of bathing valuables in a soap solution. Dense oxides are removed within several months.

After cleaning from oxides, they are cleaned with baking soda using the same toothbrush. It will remove the remaining white residue from soap that gets into the pores. You can also wipe with a woolen cloth or felt. This will allow the relief to be clearly visible.

Before sending the collection to the album, it is rubbed with Vaseline. This will improve the appearance and preserve the valuables.

Cleaning with citric acid

This acid is a destructive reagent for copper. As a result of cleaning, the appearance of the copper field may not be improved, but rather worsened.

Cleaning coins with ammonia

This method is also quite harsh and greatly destroys the surface. Ammonia is used to remove very strong green oxide, which covers the entire field unevenly. The coin must be immersed in ammonia, held for 1-2 minutes, removed and cleaned with a toothbrush. This can be repeated several times.

Boiling coins in soda solution

This method can be used to clean copper surfaces quickly and efficiently. Pour water into a liter saucepan and add 8-10 tablespoons of baking soda. Cook for 30 minutes. Next, clean the surface with a slurry of the same soda.

Cleaning with vinegar

Vinegar is also suitable for cleaning copper. But you can damage the patina on the field of the coin. To be safe, it is better to use a weak solution of vinegar (6%). You can keep items in vinegar for no more than 15 minutes. Otherwise, the patina will have to be applied artificially.

Cleaning with Trilon-B

This product makes insoluble metal salts soluble. Its solution easily removes oxides and patina. The product perfectly cleans surfaces evenly coated with oxides. But with different structures of oxides, some will be purified, while others will be preserved. This will require artificial patination after cleaning.

The main advantages of trilon are:

• does not destroy the metal of valuable coins;
• Cleaning takes little time (a few minutes).

Mechanical cleaning

This is a special technology for restoring the appearance of ancient coins. It takes a lot of time and is relevant only for valuable and rare specimens:

• the surface is cleaned of contaminants and desalted in distilled water;
• oxides are impregnated in synthetic resin (paraloid B72);
• All excess is removed from the surface using needles, brushes, and cutters;
• unstable areas are fixed and aligned with the main field of the coin;
• the work is performed under a microscope.

How to clean silver coins?

Silver items remain in good shape even in an aggressive environment . But they can still be coated with oxides of silver and other metals that make up the alloy.

Cleaning with citric acid

Silver dissolves in citric acid very slowly, and plaque and oxides dissolve much faster. Therefore, this method will not damage the body of the silver coin, and the oxides will quickly dissolve.

The cleaning technology is very simple: immerse coins in a solution of citric acid and leave for 10 minutes. Next, use a toothbrush to remove softened dirt and oxides.

For the solution, you can take lemon juice or dry acid (from a bag). To clean one coin, 20 grams of solution is enough. Its concentration should not exceed two teaspoons per cup of warm water. To give it a touch of time, it will need to be patinated yourself.

Ammonia cleaning

This method requires less time than the previous one. Pour a 10% ammonia solution into any container and immerse the coins. Keep for no more than 5 minutes, turning the valuables in the solution. This will ensure that both sides are cleaned evenly.

The disadvantage of cleaning with ammonia is its specific smell.

Cleaning with hydrochloric acid

Hydrochloric acid is good at removing oxides from silver. But it has a drawback: the surface is covered with a black patina . This method can be used for both cleaning and patination.

It is impossible to find acid on the free market. Then any product containing hydrochloric acid used for household needs will be suitable. It must be diluted in a ratio of 1:10 with water.

The dark layer formed on the field of the coin will be very durable. It can only be removed with abrasive means.

You can also clean silver B. This is a special strong product for cleaning metal surfaces. It can dissolve almost all metal salts. There are no alkalis or acids in its composition, so damage is excluded, but there will be a slight coating of patina. This effect is often even useful.

The better you clean your valuables yourself, the longer they will remain in perfect condition.

But if you haven’t had to clean coins before, then you need to check the cleaning method on less valuable coins, so as not to harm more expensive coins later. They must be stored separately in an album. Their condition will depend on this. It is advisable to give very rare valuables to a professional restorer for cleaning.

Source: https://chistota.guru/uhod-za-veschami/dragocennosti/kak-ochischat-starye-mednye-i-serebryanye-monety.html

Cleaning bronze coins. How and with what to clean

Attention! If you want to buy or sell the coins described in the article, write about it in the comments below. Our site is visited by thousands of people a day, you are sure to find a buyer or seller.

The world of numismatics is interesting and mysterious. Many people devote their entire lives to collecting coins and consider this their main hobby. Naturally, the collection must be kept in perfect order. After all, this is not only a hobby, but also a rather profitable activity.

Let's talk about bronze coins today.

Bronze coins

Bronze coins
They form a significant part of any collection. Bronze is one of the alloys that is most susceptible to change over time. How to keep such coins in good condition? How to put in order the collection that has fallen into your hands? It is worth noting here that cleaning bronze coins is a slow procedure and requires patience and attention. There are several ways to clean such coins.

Cleaning methods

As you understand, they are all homemade, since there are no industrial methods for cleaning. All cleaning recipes were found by numismatists through trial and error, and are truly ways to help get your collection in order. So, there are three main methods for cleaning bronze:

1. Using citric acid;
2. Using boiled oil;
3. Using laundry soap.

Acid cleaning method

Cleaning bronze coins using citric acid
Cleaning bronze coins using citric acid is considered one of the most common methods. We prepare a bath in which citric acid and water should be mixed. Ratio 7:3! We dip coins that need cleaning into this solution. We hold it for 10-15 minutes, after which we take out the coins and evaluate the result. When placed in a solution, the patina (patina on copper alloys) peels off and the coins become clean.

However, coins may lose their natural color. It will take several days for it to recover. It should be taken into account that after treatment with acid, various defects of the coin may be exposed that were previously invisible. It is also important not to overdo it when working with acid. Many people try to try more powerful acids, which can simply destroy the design of the coin.

Oil cleaning

Cleaning bronze coins with oil
Boiled oil is a more gentle way to clean coins, as it is guaranteed not to affect the image on the coin. Usually Vaseline or vegetable oil is used. It is brought to a light boil and then coins are dropped into it. Cleaning time usually takes 5-7 minutes. This is followed by washing the coins with water and immersing them in ethyl alcohol.

After this procedure, bronze coins acquire a magnificent appearance. But, like all cleaning operations, boiling also changes the color of bronze. It's important to know what you want to achieve. If you want a natural patina, you'll just have to wait. And if you want to get a shiny coin, then you need to rub it with flannel until it shines.

Cleaning with soap

Cleaning bronze coins using soap
The method using laundry soap is considered the simplest and safest. Nevertheless, many people use it and quite successfully. Here you will need grated laundry soap, which must be mixed with warm water. However, this procedure will take much longer - about two weeks. The mixture should be thoroughly mixed and placed in a dark place.

Periodically you need to check the condition of the coins, monitoring the cleaning process. If some dirt does not come off, you can remove it using a regular rag. This process is only suitable for coins that have not suffered much from external influences.

Other cleaning methods

Of course, these are not all cleaning methods. There are many more answers to the question of how to clean bronze coins. For example, they use toothpaste and vinegar, Coca-Cola and natural milk, hydrochloric acid and ammonia, and many other ingredients. But the three methods above are the most effective and least expensive.

Source: https://monetainfo.ru/chistka-bronzovyx-monet-kak-i-chem-chistit/

How to clean a copper coin at home?

Have you found an old copper coin that has long been oxidized and coated with plaque, and want to restore its original appearance? What to do if you find an old coin and want to sell it or keep it, but don’t have extra money for restoration? In this case, you will have to do everything yourself. We hope that this article will help you understand how you can clean plaque from a copper coin at home.

Tools and cleaning products

What products can help when cleaning coins at home? First of all, these are harmless products that are always available in the house:

• regular lemon and citric acid;
• salt;
• flour;
• vinegar;
• tooth powder, toothpaste and an old toothbrush that you no longer use;
• old unnecessary newspaper;
• a soft cloth to wipe coins.

This will be enough for you to cope with a raid of easy to medium difficulty. You may also need a special jewelry cleaner, which you can buy at the nearest jewelry store in your city.

Different ways to clean a coin

Among the most popular methods for cleaning copper coins at home are the following:

• Take a regular lemon. Cut it in half. Press a coin into the lemon pulp and leave it in this position for 15-20 minutes. After the procedure, clean the coin with a toothbrush, rinse in cold water and wipe with a cloth until it is dry. You should always wipe a coin, since leaving it wet for a long time risks getting dark spots on the material.
• Mix salt and flour, adding a drop of vinegar to the mixture. The salt should be coarse. Rub the solution onto the coin and give it time to soak in. This will take about 15-30 minutes. After the solution has worked, rinse the coin and wipe until dry.

• Take regular boiling water, stir vinegar in it in a ratio of 4 to 1. Add two tablespoons of salt to this solution. Place a coin there and wait for the solution to cool. After this procedure, carefully remove the item, clean it with a toothbrush and rinse. Don't forget to wipe the coin dry!
• Rub the coin with whitening toothpaste or plain tooth powder. Rub the product firmly, but do not damage the coin. Rinse. If the result is unsatisfactory, repeat the procedure again and again until the coin becomes cleaner.

• You can also purchase a special jewelry cleaner at any jewelry store. The product is a ready-made solution for cleaning products, including copper coins. All you have to do is dip a coin into the solution, hold it there for several minutes, and then wipe it dry with a cloth.
• Are you afraid of damaging your coin? Do you think it's too valuable to experiment with cleaning? Just give the coin to the jewelry shop for a certain price. There they will polish it for you and apply a special coating that will save the coin from a green coating for a long time.
• As a periodic preventive measure, we recommend wiping the coin with an old, worn newspaper. No matter how strange it may sound, this procedure helps in cleaning the coin, and it will not darken for a long time.

Copper alloy coins

According to the characteristics of the alloys from which different coins are made, it is necessary to approach their cleaning. Adding different metals to bronze changes the material itself, so some of the methods described above may not work. To replace them, other methods can be proposed that would depend specifically on the alloy. Among the most popular alloys for creating coins in old times, we note the following.

Copper-nickel alloy. Nickel is a very long-lived material and rarely erodes or oxidizes. Such coins remain unharmed longer, but it is the copper in their composition that deteriorates over time. Oxidized copper-nickel coins become covered, like erosion on pure copper, with a green or red crust. Cleaning such coins is similar to pure copper coins.

Bronze coins. Unlike ordinary copper coins and nickel alloys, this material (remember that bronze is an alloy of copper and tin) has a number of its own characteristics, which must also be taken into account to achieve a satisfactory result.

How to remove dirt from bronze coins?

• place the desired coin in a glass filled with distilled water;
• let the dirt that covered the coin soak;
• Using a toothbrush and soap, rinse the coin in warm water, rinsing the object from time to time during the cleaning process;
• When the dirt is removed, wipe your coin.

To remove oxidation from bronze, prepare a special solution that contains sulfuric acid (preferably a five percent concentration) and leave the coin in it for several hours. This method will help you get rid of severe oxidation on bronze coins.

For lower degree oxidations, a solution with acetic or citric acid, up to 10% concentration, is also perfect.

You can remove small spots of oxidation on a coin using a regular needle to protect other coins that will lie next to this one from oxidation.

To properly care for bronze coins, it is recommended to rinse them regularly. To do this, rinse the coin in distilled water, and after this procedure, wipe with a paper napkin or dry towel.

Applying patina to the coin

It is extremely important to maintain the original appearance of your coin by applying a new patina to its surface.

Patina is an artificial protective coating on coins of copper and other copper alloys, including bronze. By applying a patina, you can preserve the appearance of the coin for a long time, and it will be protected from erosion and oxidation.

The recipe for applying this film is as follows:

• Take simple potassium permanganate and copper sulfate, the proportions should be at least three to one (the best proportion is 50 grams of potassium sulfate and 5 grams of potassium permanganate per liter of water). Place them in an old and unnecessary pan, fill the mixture with water and put on fire. It is advisable to do this outside and use a fire.
• Put out the fire when the water has boiled. Leave the pan over the heat. Stir the contents while gradually adding coins into the pan. During this process, the coins should change their color.
• Remove the contents from the pan and carefully arrange the coins to dry.
• Preserve the patina. A special solution of alcohol and benzene will help you with this. The proportions should be one to one.
• And lastly, wipe them using vegetable oil.

How to store copper coins at home?

The right approach to storage is the key to the safety of your copper coins. The more the conditions of their maintenance correspond to the norm, the less time you will have to spend on their restoration.

Here are some tips for storing coins properly:

• To avoid constantly handling each coin, which can also cause the metal to deteriorate, place your collection on a wooden or cardboard tablet. You can also use albums that have plastic pockets.
• Keep your collection dry and clean.
• If you have to take a coin in your hands, take it only by the edge, do not touch the sides of the coin.
• Wash the contents of your collection with warm water and soap from time to time.

Proper care of your coins will turn your numismatic hobby into an even more exciting experience. Always maintain the collection in a presentable manner and in appropriate conditions.

Source: https://stirkauborka.ru/chistka/kak-ochistit-mednuyu-monetu.html

How and with what to clean copper coins at home

Ancient coins are very attractive, however, all their attractiveness disappears when they darken. So the question arises, how to clean copper coins? This problem can be solved by various means without harm to the metal.

If you need to eliminate this drawback, then in the kitchen there will probably be something that will help put the coin in order. First you need to figure out how and what to clean copper coins at home. You will need a little salt, flour, vinegar, lemon and warm water. In the bathroom we will need an old toothbrush and toothpaste.

Other tools that we will need are ammonia solution. Now you can start cleaning the coins.

General cleaning process

Before the coin cleaning process, it is better to determine the type of oxide on the coins. Copper oxide is a very harmful type of oxide for copper coins because the oxide reacts with air and is very poisonous. This type of oxide is the most difficult to clean.

There is also an oxide called patina. This type does not have a negative effect on coins; on the contrary, it protects coins from exposure to gases. This oxide is formed when a coin is left underground or in the air for a long time. If such an oxide is on a coin, then this is evidence of authenticity.

Before the cleaning process, soil and dirt must be removed mechanically. The coin is washed in a soap solution and dried.

Lemon

Place a coin in a lemon slice for 20 minutes. After removal, the coin must be cleaned with a toothbrush. Next, rinse it in warm water and wipe dry with a cloth.

Salt

You need to mix one tablespoon of salt with a tablespoon of flour and a drop of vinegar. You need to rub the coin with this powder. After 15 minutes, the coin is rinsed and dried to avoid the appearance of black spots.

Vinegar

Bring a glass of water to a boil and add concentrated vinegar (a couple of tablespoons) and three tablespoons of salt. Place the coin in this liquid and wait until the water reaches room temperature. Next, you need to take out the coin and thoroughly clean it with a toothbrush, rinse and wipe.

Toothpaste

The soaked coin should be cleaned with a toothbrush and toothpaste. After the required time, the coin is rinsed and dried. If the result is not satisfactory, the cleaning procedure is repeated again.

Special fluids

A special liquid will help you easily remove oxide and other traces. This liquid is sold in jewelry workshops and stores. To achieve a visible effect, the coin is dipped in liquid for 15 minutes and then simply wiped with a cloth.

If for some reason it is not possible to do this yourself, then the jeweler will be able to do this work himself - he will clean and polish the coin with professional equipment, and also apply a coating that will protect the metal surface.

Coca Cola

Everyone knows that Coca-Cola cleans various surfaces well. This drink can also help clean coins. The drink is poured into a glass container and an object is placed there. We leave all the contents for a week. To speed up the results, the dishes can be placed near a heat source, as increasing the temperature of Coca-Cola enhances the cleansing properties.

Electrolysis method

Everyone knows what electrolysis is. To clean a coin using electrolysis, you need to have a small power supply, a ceramic container, and a saline solution (1 tablespoon per liter of water). We attach the “minus” to the coin, and the “plus” to any metal object. The entire structure is lowered into the solution, and the power is connected to the network. The liquid will quickly become cloudy as all dirt and oxides dissolve.

Copper coins

How to clean a copper coin? As already mentioned, the easiest method of purification is to soak the copper coin in an alkaline solution. The biggest advantage of this method is that there is no side effect for the alloy. Sometimes it is necessary to remove the coin for rinsing in water and cleaning with a toothbrush. The procedure can be repeated over many months until the best result is achieved. It is also possible to use vinegar.

Cupro-nickel coins

Often, a copper-nickel coin does not need to be cleaned because the nickel does not react with surrounding substances. But copper, which is also present in the coin, provokes the appearance of oxidative processes. In this case, a patina (green or dark red) appears on the copper-nickel coin. How to clean a copper coin from green deposits and white deposits? Plaque can be easily removed along with unnecessary oxide with a light vinegar solution.

Bronze, silver and gold coins

Bronze coins are cleaned in the same way as those made from copper. For gold coins, a good effect is achieved after washing in a solution with baby soap, and the coin should be cleaned with a soft sponge. As for silver, it is better to find out what standard the silver coin is made of. Silver (not lower than 625 standard) can be cleaned with ordinary ammonia. This product is very cheap, and you can find it in the nearest pharmacies.

Low sterling silver can be cleaned well with lemon juice. The coin should be dipped in lemon juice without diluting it. It is important to note that the silver coin was not in contact with oxygen, in order to avoid the appearance of irremovable oxidation in areas of contact between the two media. It is best to shift the coin to different sides every five minutes. It should be kept in liquid until the oxidation disappears.

Upon completion of the procedure, the coin is washed and dried.

It is also good to rub silver with soda moistened with a small amount of water until the oxide completely disappears.

Iron-zinc coins

Care must be taken when cleaning zinc iron coins. They can be cleaned with a weak solution of hydrochloric acid, carefully using a brass brush to clean them.

To give a shiny effect and enhance the color, you can rub zinc-iron coins with felt cloth or felt boots.

It is better to remove whitish plaque, as well as pockets of rust, with a thin needle and a sharp surgical scalpel. Next, you should lower the coin into the saline solution, constantly monitoring the process. If the concentration of the solution is too high, the coin may be damaged and, accordingly, it will be impossible to sell such an item. The coin should be washed until the rust and oxide have dissolved, and then dried.

What is the best way to clean coins with white coating?

White spots indicate that there is a zinc alloy in the copper. The simplest cleaning method is to use distillate. The coin is placed in water for 2-3 days. It may be that the copperhead will come off in the form of green flakes. In this case, it is removed either with a needle or a brush, both toothbrush and household brush.

What is the best way to clean black and green from the surface of a copper coin?

Next, we will learn how to clean the greenery from a copper coin. The coin is wiped with pieces of cotton wool soaked in ammonia, and then rinsed in a solution with soap. Ammonia compounds react with copper compounds, resulting in green and black stains, followed by a complex that dissolves in water and is easily washed off.

What not to use and do when cleaning coins

• Highly concentrated acid solutions can melt the striking on coins;
• abrasive sandpapers for construction often remove “patina” and embossing;
• Temperature changes can adversely affect the strength of the coin. After heating, the coin suddenly falls into a cold temperature, which provokes the destruction of the “patina” and can damage the structure of the coin;
• metal brushes are harder than brass, so their use is not recommended, as the pattern and “patina” are erased.

Source: https://ujutnijdom.ru/sovety/kak-ochistit-mednuyu-monetu.html

How to clean coins at home and with what

› Caring for things

Many of us are interested in collecting coins, both modern and ancient. At the same time, every collector wants his collection to look perfect. But not everyone knows how to achieve this. Therefore, the article will look at how to clean coins at home and with what to avoid damaging them.

Features of cleaning coins

Cleaning coins is a rather painstaking and delicate task that requires compliance with certain conditions. One of them is the metal from which the product is made.

Therefore, before choosing a product that will help you clean your collection at home, you should pay attention to the material from which it is made.

Copper

To ensure that the cleaning of copper coins from green plaque and blackness is successful, you can use the following methods:

1. To quickly and effectively clean oxide from a copper coin, you will need fresh lemon. Simply cut the citrus fruit in half and immerse the oxidized coins in its pulp for about twenty minutes.
2. If you need to clean copper exhibits from dirt, a solution of solid soap shavings in warm water will help. To carry out the hygiene procedure, you need to immerse the soiled products in soapy liquid for fifteen minutes. After the specified time, they will be easy to wash with plain water.
3. Nine percent table vinegar will help to effectively clean a copper coin at home from greens and blackness. To clean old coins, you will need to apply a little solution to a soft sponge and gently rub the coinage until the dirt is completely removed. After the hygiene procedure, cleaned exhibits must be washed with water and dried.
4. Ammonia can quickly clean a copper coin from dirt. First, apply the product to a cotton pad, then wash the darkened surface and rinse the product with water.
5. To remove rust from coins made of cupronickel, that is, from a copper-nickel alloy, you need to treat them with Asidol. This product can effectively clean any metal products.

Bronze

An old bronze coin can be cleaned using the following proven methods:

• Mix one hundred and fifty milliliters of water with fifty grams of citric acid, and immerse coins in the resulting liquid for fifteen to twenty minutes. After such a procedure, not a trace of rust will remain.
• If the products have darkened, you need to immerse them in olive oil heated in a small metal container and boil for five minutes. After that, remove the exhibits and clean them with ammonia.
• When you need to clean bronze from corrosion at home, you can use any sweet soda. Typically, Pepsi or Coca-Cola is used for such purposes. To tidy up old coins, you need to pour them into a glass glass and fill them with a carbonated drink. To clean effectively, you need to place the dishes in a warm place for two to three days, then rinse with water. This way you can clean coins until they shine.

Source: https://chistyulka.ru/uhod/kak-pochistit-monetyi-v-domashnih-usloviyah-i-chem

How and with what to effectively clean a copper coin

How to clean a copper coin. Cleaning copper coins at home is quite simple if done correctly. This need arises from time to time for every metal, since it can oxidize and become coated.

The older the product, the more susceptible it is to damage. If you know what to clean and how, then you can do it yourself without using the services of specialists. The methods are very simple and involve the use of improvised things that are found in almost every home.

So, how to properly clean copper coins at home?

Soap

How to clean an antique copper coin? To do this, we use the safest method. We will need baby soap. Grate it and pour in enough water to form a mass resembling plasticine. We immerse the product in the resulting mixture and leave it for a while. We periodically remove it and see if pieces of plaque have peeled off; if so, we clean it and immerse it again. The procedure is carried out until complete cleansing.

This is often how the most delicate Tsarist and Soviet coins are cleaned. Sometimes it can take days or even weeks for complete cleansing.

Salt, flour and vinegar

Take a tablespoon of flour and salt, add a drop of vinegar, mix. Rub the coin and leave it in this state for 10-15 minutes. Rinse off any residue under running water and wipe dry. It is better not to keep it longer, as black spots may form.

Professional liquids

You can buy them in workshops and jewelry stores, then clean copper coins at home. The process itself is very simple, just immerse it in liquid for 10-20 minutes and wipe dry.

Coca-Cola

Cola is not only a drink, but also an excellent cleanser. Easily eats away plaque and even rust. It is best to use only as a digestive aid. It can handle cleaning a copper coin.

To do this, immerse the object in the drink for several days, in difficult cases for the whole week. For faster results, place it in the sun. When Coca-Cola heats up, its cleaning properties increase and the effect will be faster.

When the time is up, wash the coin and wipe it. Pour out the drink.

Soda

We take our object and place it in a bowl of warm water. Add soda there and leave for half an hour. Now you need to remove the plaque using a brush. We wash everything off with running water and dry it.

Workshop

When you need to clean an antique copper coin or a particularly valuable one, you can contact a jewelry workshop. There it will be quickly cleaned and polished, in a word, restored. For some, this will be the best way to clean a copper coin.

Edge Cases

It is better not to clean ancient coins using this method. Use only in extreme cases, when the contamination is particularly severe and other methods do not help. We will use caustic soda. We dilute in cold water. It's better that you have gloves on your hands now. Using tweezers, lower the object into the prepared water and leave for 5 minutes. We take it out and rinse it well under running water.

Attention. If blue or green spots form on the copper during the cleaning process, remove the coin and wash it. Otherwise, this method can cause irreparable harm.

What is the best way to clean coins with a white coating?

A white coating (verdigris) is a sign of the presence of a zinc alloy in a copper alloy. In this case, distillate should be used. Immerse the object in a vessel with water for 2 days. Anything that flakes off is cleaned with a brush.

What is the best way to clean blacks and greens from a copper coin?

How to remove greens from a copper coin? It's simple, we need ammonia, soak a cotton pad in it and wipe it. Now make a soap solution and rinse the item there, leave it in the solution for a few more minutes. Wipe again to remove greens and other stains and rinse in clean water. This is how you can quickly clean copper coins at home.

Cleaning a copper coin at home: two simple ways

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How to clean an old copper coin? To avoid harm, you must first determine the level of contamination of the coin. The stronger the contamination, the more effort and time will have to be spent to remove it. There are two simple ways to quickly and effectively clean a coin, we will talk about them today.

First we study the problem, then we proceed to the solution.

Not all coins are cleaned equally. Pollution can be divided into three types:

1. can be removed immediately without any extra effort;
2. need to be pre-soaked;
3. cannot be cleaned.

If the coin is just dirty, just take a regular toothbrush and soap and rub it under running water.

https://www.youtube.com/watch?v=5DJqg6ljJf0

Another enemy of coins is oxide. This is unless we are talking about patina (a small layer that is formed as a result of the interaction of oxygen, carbohydrates, salts and acids). This oxide does not spoil copper, but rather protects it. The presence of patina is a separate proof of the authenticity of the product. Externally, such a coin has an expensive and noble appearance.

The worst enemy of any numismatist is corrosion. It is almost impossible to remove it without the help of chemicals.

When cleaning copper products, be extremely careful. Even the slightest damage to the surface can lead to complete devaluation of the coin.

Effective remedies against oxide on copper coins:

• ammonia;
• Trilon-B;
• baking soda;
• Sulfuric ointment;
• ballistol.

Cleaning a copper coin at home is quickly done using ballistol .

The main advantages of this tool:

1. highly fluid, penetrates even the smallest pores;
2. not aggressive, destruction of the coin in this case is excluded;
3. does not harm health, is completely safe for the skin of the hands;
4. promotes better preservation of molasses.

Let's look at two simple ways to use these tools:

Option 1) How to clean a copper coin using ballistol?

1. We take a small plastic bag, place a coin in it and fill it with ballistol. The solution should completely cover its surface. Since the liquid is very fluid, it is better to take another bag on top so as not to stain anything.
2. After ten to fifteen minutes, take out the coin and degrease it using regular dishwashing detergent.

   After rinsing thoroughly, leave to dry on a napkin or a well-absorbing towel.

3. When the copper product is completely dry, apply a little sulfur ointment to it. Next, take a small cloth (should be thick) and rub the coin. Due to the reaction that occurs during friction, the coin heats up and all traces of corrosion remain on the felt.

   At the same time, the metallic color disappears, leaving only a beautiful brown color.

Option 2) How to clean an old copper coin using improvised means

Here we need:

• soda;
• soap;
• Toothbrush;
• running water.

For solution:

• Trilon-B (odorless, non-toxic) - 1.5 tablespoons;
• hot water (the coin should be completely wet when standing on its edge).

Even a child can cope with this task.

1. We wet the brush under running water, then rub it with soap and place it in a container with soda. Let's start cleaning. We hold the coin by the edge and scroll it so that the direction of the pile changes all the time. Otherwise, dirt may remain in small depressions and never be washed out. You need to clean both the fields and the edge; in the end, the coin should turn out to be the same color. After rinsing the coin under water, leave it to dry on a napkin.
2. While the coin dries, we begin preparing the solution. We mix the ingredients, and meanwhile the coin dries out. Now you can immerse it in the container. As soon as you place an object in water, a green shell will gradually begin to appear around it. We wait half a minute or a minute (do not overexpose so as not to spoil the drawing) and take it out.
3. Without wiping, scoop up a pile of soda with a coin and begin to clean the oxide from the coin with your fingers. Next, we return to the soap and brush, doing the same steps as at the beginning.

If after all these stages the coin still does not acquire the desired appearance, we place it again in the solution with Trilon. When the work is done, rinse the coin under running water, dry it and send it to your collection.

Cleaning copper coins at home can take half a day, sometimes even a whole day, but the results are worth it.

And so that in the future you don’t have a question: how to clean a copper coin at home, we remind you of some rules for storing coins.

Where is the best place to store copper coins?

Under no circumstances should copper coins be kept in an iron box; there they will quickly rust and lose their value.

Since numismatics is considered a fairly popular hobby in our country, there are many packages that are designed specifically for storing collections.

You can buy a regular inexpensive album. But since it contains polyvinyl chloride, you cannot keep your wealth in such a place for a long time, it will deteriorate.

A little more expensive, but a more reliable option is to buy coin tubes. Since they are made of plastic, which does not affect copper in any way, you can store coins here as long as you like.

The collection must be kept in a dry and clean place so that moisture, dust, etc. do not get inside.

These are the basic recommendations that will help you clean copper coins yourself without damaging their surface.

We also recommend watching a video on how to clean copper coins:

Source: http://obuborke.com/ochishhaem-mednuyu-monetu/