Methods for cleaning coins

Methods for cleaning coins In the category Ancient coins more articles and learn more information about Methods for cleaning coins Reviews Price Specifications Features Image manuals videos Accessories All this in metal detectors for gold.

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Methods for cleaning coins

How to clean coins- Cleaning coins – is a method of removing particles from the coin surface soil, dust and traces of metal oxidation .

It is easiest to remove surface dust and dirt coin . For this coin is washed in warm running water using a soft brush or a simple toothbrush. Such a method is suitable for all kinds of coins of different metals and alloys. With different kinds of oxidation must fight harder , as in this case, the main role is part of a metal coin.

Consider the following methods of cleaning coins of different alloys :

Methods for cleaning coins

 

 

a) Gold Coins is sufficient to wash in warm water using baby soap and a soft brush .

b) For silver coins , it is desirable to know the sample sterling silver .

Cleaning silver coins low sample is recommended to use an ordinary lemon juice . In these cases, the coins are completely immersed in the solution used . They should not be in contact with the air, since it may lead to the formation of unremovable oxide at the interface between .

Periodically coin flip full contact solution for the parts with the chemical reagent. Coins must be in solution until complete dissolution of oxides.

After the removal of oxides coins washed in warm running water and dry.

The easiest and most affordable way to clean silver coins , it is wiping their regular baking soda. Baking soda lightly moistened with water and rub the silver coin is made to remove it from the oxides.

c) The most affordable way to clean and long copper coins is their dipping them in soapy water .

A huge advantage of this method is its safety for copper alloy coin. Coins are periodically removed from the soap solution , rinsed under running water and cleaned with a soft brush . By the time the process may last up to several months.

Just to clean copper coins , you can use simple vinegar , with 5-10% acetic acid content .

With a slight oxidation of the metal coin coin must be kept in vinegar a few minutes , with extensive damage to cleaning coins can be extended to several hours.

Coin stacked , flipped , as in the case with silver coins.

After passing through the purifying reagent coins are washed under running water and dried.

Necessary to distinguish the origin of the oxides on the copper coin . If oxide green color, which should be removed with a coin and so-called ” patina “.

” Patina ” is formed by long-acting finding coins in the ground and in the air and as it preserves the coin. Just patina of authenticity is the subject of coin , so to remove it with a copper coin is not recommended.

g ) Coins of alloys of iron and zinc to require a more careful purification process . For their purification can use a weak solution of hydrochloric acid (HCl) with a further accurate using a brass brush.

Using a thin needle or the tip of a surgical scalpel to remove from the surface of the coin signs of rust and a whitish bloom. After deleting the coin dipped in a solution of hydrochloric acid under control. Should take a very weak acid solution , otherwise it may get completely unsuitable for sale coin.

When will the melting oxides and rust on the coin it should be washed under running water and dry.

Just in the final step, you can apply ointment coins on a piece of felt or soft ordinary boots. This will give the coin a specific color and shine.

What should not be used when cleaning the coins!

Concentrated solutions of acetic , hydrochloric , nitric and sulfuric acids , which may lead to melting on the coin coinage .
Various kinds of building skins , which often leads to the removal of the coin with ” patina ” and coinage .
Method of temperature difference – the coin is heated to the maximum intensity on the fire and made ​​her quenching in cold water. This leads to a loss on coin ” patina ” and can damage the integrity of the coins.
Brush with metal bristles , it is much harder brass and very good drawing takes coins and ” patina “.