The ruble of Emperor Constantine I from the Romanov dynasty
The most important mystery of this coin is that there has never been such an emperor like Constantine I, but there was a ruble of Constantine I! Not a single…

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Coins of Ivan the Terrible
A small miniature from the Russian annals of the 17th century depicts the process of making coins. From this it is known that silver billets were first smelted in a…

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Medicine on coins and bons
Medicine has almost always been in any state on one of the first places, and such a manifestation can be seen on many antiquities, for example, on the same coins…

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moisture on the coin

Coin cleaning rules

No matter what metal coins are made of, there are a number of general rules that must be observed when cleaning their surface from contamination.

In no case do not immediately dry-clean the coin. Their surface is usually not evenly polluted, and the reagent can react with the metal in areas where there is less dirt, while other areas will still need to be cleaned. Therefore, the mechanical cleaning of the coin is first applied.

To start this process will need water. Pay special attention to the fact that not all water is suitable for cleaning coins. Continue reading

From Pushkin to Gagarin
The once popular bimetallic commemorative 10-ruble coins are now fading into the background. For some reason, collectors have recently become more interested in commemorative coins made of non-precious metals. One…

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Coins of three eras and their manufacturing techniques
It happens that determining the place and specific time of minting coins of medieval Russia is quite problematic to establish. This is due to the fact that the medieval coins…

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Coins of Ivan the Terrible
A small miniature from the Russian annals of the 17th century depicts the process of making coins. From this it is known that silver billets were first smelted in a…

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Value of the CBR coins
Numismatics is the meaning of life of a large number of people. The Bank of Russia is a kind of trendsetter in the field of coinage of modern numismatics. The…

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