Answer
Jul 31, 2025 - 08:01 AM
Silver coins can develop a milky appearance due to a phenomenon known as "milk spotting," which is often caused by the presence of microscopic residues or contaminants, such as detergents or other chemicals, left on the coin during the minting process. These residues can react with the silver over time, leading to the formation of whitish spots that are difficult to remove without potentially damaging the coin.
