How Can You Tell If a Silver Coin Has Been Cleaned?

By GovMint :

There are several telltale signs when determining if a silver coin has been cleaned. One of the most noticeable indicators is the presence of hairline scratches on the coin's surface which result from abrasive cleaning methods. Additionally, cleaned coins may lack natural luster, which is the original shine that coins have when minted. Luster is often diminished or completely removed during cleaning, leaving the coin with an unnatural appearance.

It's important to note that cleaning a coin can significantly reduce its numismatic appeal, as collectors generally prefer coins with their original surfaces intact.

Sources Used:

https://www.thesprucecrafts.com/identify-cleaned-coins-768301