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
With the emergence of the Soviet Union, or rather, with its unification of individual republics, a new problem emerged, which was where exactly it was necessary to mint coins, make memorable signs, and so on. However, soon a solution was found, and it was that the production of insignia, as well as metal money, would be distributed between the country’s largest mint yards – the St. Petersburg Mint, the Moscow Mint and the Kiev Mint.
St. Petersburg Mint was one of the largest mints, not only in the Soviet Union, but throughout the world. Not only coins were minted here, but also insignia, orders, badges, medals and so on were made. Continue reading