How to clean antique coins at home - Metals and their processing

How to clean old coins at home - For problems

Cleaning coins is a labor-intensive and painstaking process. To clean the exhibit, you must follow a number of instructions that are mentioned in this material. Let's look at how to clean a copper coin at home. This will help if you need to clean copper coins from oxide, blackness, and green deposits.

Analyze the degree of contamination and decide how you can help your exhibit. If you decide to clean coins, then you cannot do without soap and ammonia. You should avoid using chemicals: this could damage the exhibit.

Method 1: soap and water

Take soap (preferably laundry soap) and grate it. Add 1 liter of water. Leave the coins in the solution for 10-15 minutes. The dirt will become wet and can be easily removed with a sponge.

Method 2: Vinegar

Put on gloves, take a soft sponge and apply some vinegar to it. Rub the coin with light massage movements. After this, rinse the coin under warm water to remove any remaining product. An alternative to vinegar can be ammonia.

Method 3: lemon

Take a fresh lemon and cut it into 2 halves. Insert a coin directly into the pulp of the fruit and leave for 15 minutes. After the time has passed, take it out and carefully clean it with a brush. Don't forget to rinse with water at the end.

How to clean rust from a coin?

Each collector has his own secrets for cleaning coins from rust and other contaminants. Each metal has a unique chemical composition, so you need to know what can and cannot be used to restore these valuables.

To clean a coin from rust you can use:

vinegar;
citric acid/juice;
soda;
coca cola;
salt;
laundry soap.

Use all these means by analogy with the above methods.

How to clean a silver coin?

Today there is no single method for cleaning silver coins at home, because everything here directly depends on their fineness and degree of oxidation. This is due to the fact that they have different chemical compositions and, accordingly, different cleaning methods.

Old specimens of high standard are cleaned of blackness within an hour with a solution of ammonia (90% water). If there is none, then you can replace it with a soda solution (300 g per 1 liter of water), in which they should be soaked for about 2-3 hours. If desired, you can boil the solution a little for a better effect. This should rid the coin of blackness, which is important for older coins.

To clean a coin, use a mixture of toothpaste, baking soda and ammonia. This method is good because it does not contain abrasive particles that can harm silver. This mixture should be applied to the contaminated surface and thoroughly cleaned with a brush.

For exhibits made from low-grade silver, the Trilon B method is suitable (Trilon B is a special type of salt). You need to dissolve 1 tbsp. a spoonful of salt in a glass of hot water, then put coins in there and wait for the result.

However, in order not to harm the metal, all actions should be carried out in well-ventilated areas. Next, this process must be continued by treatment with a special means for cleaning silver of a certain sample.

How to clean blackness from a coin?

Time is one of the few causes of blackness. In this article we will tell you how to clean dirt from exhibits. Over time, the top layer of copper oxidizes as a result of contact with air, which is why a special coating appears on the surface - patina. It looks like a black coating, which can be difficult to get rid of even for an experienced restorer.

However, there are several tricks that can help get rid of this problem. Alternatively, the coin can be wiped with a cotton pad soaked in ammonia, followed by rinsing in a warm soapy solution. The main component of this alcohol is ammonia, which, due to its properties, reacts well with copper oxide compounds.

There is another way to clean a copper surface - a mixture of oxalic acid, turpentine, ethyl alcohol and water. This mixture can both clean dirt and degrease and remove metal oxide.

How to clean green deposits from a coin?

There are times when you don’t know how to clean coins from oxidation. After all, oxidized coins lose their original, marketable appearance. The cleaning method largely depends on the type of alloy itself, so you should carefully determine what type of corrosion has affected the metal.

There are many types of corrosion, the most common of which are:

green spots - oxidized copper surface. Formed as a result of prolonged exposure to a humid and damp environment;
a reddish coating, most often found on coins that have been in a poorly ventilated space;
The black color of the metal is a patina, indicating the great age of the metal.

There are several ways to get rid of green coating. One of the safest is cleaning with a solution of diluted vinegar. To prepare it, you need to take two tablespoons of food vinegar per liter of clean water (ideally distilled).

After this, you should place the coins in this liquid so that they do not come into contact with other surfaces and have the smallest area of contact with the walls of the container in which they are placed.

This is necessary to ensure that the entire surface of the coin is evenly exposed to the acid.

There are many cases where large quantities of coins were placed in a small container, resulting in uneven etching and staining from uncleaned areas.

It is also necessary to promptly clean the layers formed due to the action of the vinegar mixture. This must be done several times a day, taking the coin out. You need to clean it with a toothbrush. But it should be remembered that excessive force can seriously damage the coin and form red spots that practically cannot be removed without mechanical intervention.

This method will help clean both oxidation and various dirt stains. But we should not forget that full restoration should not be expected, since the structure of the metal undergoes irreversible changes over time.

How to clean a bimetallic coin?

A self-respecting numismatist knows that each type of alloy requires its own approach to cleaning. The most common problem is the condition of the metals, when one part of the coin needs cleaning with anti-corrosion solutions, but the other is in good condition.

And if ordinary cleaning with acid solutions is applied to such cases, then there is a chance of harming the second metal, which can cause defects such as tarnishing, changes in the chemical composition of the top layer of the alloy, or changes in the base color.

That is why cleaning bimetallic coins at home may not give the desired results, but will definitely make their surface look better. To carry out such procedures, you will need a soda solution (2 spoons per glass of hot boiled water). The coin needs to be placed in it for 15-20 minutes.

Do not forget about the above comment regarding its placement in the container. After pulling it out, you can clean it with white toothpaste without dyes. If there is none, you can use tooth powder.

But it should be taken into account that its abrasive particles can leave micro-scratches, so this procedure should be carried out extremely carefully so as not to damage the surface or cause microcracks.

If the above method does not give sufficient effect, you can try chemical agents to dissolve limescale and corrosion. To do this, apply a small amount of gel to the surface of the coin and wipe it thoroughly with a soft cloth. If the stains do not come off, you can try the same steps, but using a toothbrush.

After these procedures are carried out correctly, the metal should acquire its characteristic color and shine.

How to clean a zinc coin?

Avid numismatists also have zinc specimens. Cleaning such coins is a very labor-intensive process. This is due to the fact that zinc reacts actively with strong acids, but its salts have poor reactivity to weak acid solutions. That is why the best option for cleaning such valuables is to dissolve the patina layer in a container with a 1% solution of hydrochloric acid.

Before you start etching the metal, you should remember that the coin cannot be left unattended in such a liquid, since it is required to check its condition every 5 seconds. This is necessary in order to see the moment when the patina has already worn off and the acid has taken on the base metal.

Cleaning zinc specimens at home will be much more effective if the container is wide enough. This is necessary in order to keep the coin in the acid and at the same time clean it with a toothbrush. Hydrochloric acid is different in that:

has different activity with metals;
does not harm human skin;
has a good reaction with zinc and iron.

After cleaning, the coin should be rinsed from acid residues with strong water pressure. This is due to the fact that if you simply throw it into water, the acid will remain on the surface of the zinc for some time. This can lead to additional etching of the alloy, which is extremely undesirable for such products.

Completely cleaning zinc coins at home is quite a labor-intensive task, so you should not expect much effect. However, in any case, they will acquire a more attractive appearance and add to their value.

Source: https://otproblem.ru/kak-pochistit-starye-monety-v-domashnix-usloviyax.html

How to clean coins at home
Source: `https://serviceyard.net/sovetyi/kak-ochistit-monetyi-do-bleska.html`

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How to clean old coins at home

Cleaning coins at home is a fun activity. It is interesting to see how symbols and engravings appear on products. The older they are, the thicker the plaque, but if they are put in order, the cost will increase significantly. Special preparations for cleaning are quite expensive, but collectors use home remedies, which they use to carry out the beautification themselves. Let's take a closer look at the available compounds and learn how to properly clean them.

Features of different types of cleaning

How to clean an old coin at home

The collectible value of coins depends not only on their age, but also on their condition. Old coins stored in unsuitable conditions accumulate a large layer of dirt and oxides form. There are special solutions to remove such contaminants, but they can be quite expensive. Therefore, it would be useful for a novice numismatist to know how to clean coins at home, using household products. We will talk about this in our article.

What you need to know about restoring coins at home

How to Clean Antique Coins: Copper, Bronze or Silver

Interest in numismatics has allowed many people to earn, if not a huge fortune, then a decent increase in their salary. But to sell at auction, it is very important that the coin looks good. Sometimes it is enough to simply clean it using simple methods that can be used at home.

Cleaning methods and methods

How and with what to clean a copper, bronze or other ancient coin - Cleaning Master

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?

Cleaning coins until they shine at home

Over the years, dust, microorganisms and other debris accumulate on coins, especially old ones, which deprives them of their original shine and beauty. But in fact, it is not at all difficult to clean coins at home in order to return the money to its original appearance and prevent its destructive oxidation.

Formation and value of patina

How to clean old coins without leaving home

Today we will talk about how to clean old coins. Every year they gain even more value, but the price greatly depends on the condition. Therefore, an item preserved in proper condition receives additional value.

When antique coins are kept in unfavorable conditions, dirt, oxides and deposits of different colors develop. You can use special solutions that are sold in jewelry stores, but not everyone can afford it.

Therefore, let's look at how to clean an ancient coin using available methods.

General information about cleaning coins

How to clean old coins at home - For problems

Method 1: soap and water

Take soap (preferably laundry soap) and grate it. Add 1 liter of water. Leave the coins in the solution for 10-15 minutes. The dirt will become wet and can be easily removed with a sponge.

Method 2: Vinegar

Method 3: lemon