Coin Toning Explained: What Causes It and How It Affects Coin Value
Coin Grading, Authentication & PreservationWhat is coin toning? Toning is a surface discoloration caused by a slow chemical reaction with the coin’s environment. It differs from corrosion, which eats into the metal. Toning mostly
Coin Toning Explained: What Causes It and How It Affects Coin Value Read Post »
