Sapyx ✭✭✭✭✭

Greenish deposits can form on silver coins - but it usually requires some kind of unusual chemical environment. Perhaps somewhere with acid fumes, or getting buried in a certain kind of soil. I'… (View Post)

As an outsider looking in (I'm from Australia), my main "complaint" about US coinage in general is that it's way too verbose. Too wordy. The coin the OP has posted is not guilty o… (View Post)

PVC goo doesn't just "appear" out of nowhere. It essentially has to be squeezed onto the coin by prolonged direct physical contact with phthalate-laced PVC. Now, the goo might original… (View Post)

"Dipping" cupronickel coins is more problematic than dipping silver coins, as anything corrosive enough to remove stains and oxidation from the surface is also likely to be strong enough to… (View Post)

This is a good example of "this thread is useless without pictures". Because, as jmlanzaf said, "verdigris" is impossible to develop on silver coins, as it requires a copper-based… (View Post)