How Do You Tell If A Coin Is Improperly Cleaned?
Improper cleaning can leave scratches, discolored areas or a haze on the surface of a coin, which can be seen under a magnifying glass. The cleaning process can also strip the natural patina or toning of a coin, making it appear unnaturally shiny or bright. In some cases, cleaning can also leave residue or chemical stains that can damage the surface of the coin over time. Therefore, it is recommended to avoid cleaning coins unless you are sure of the appropriate methods and have the necessary expertise.