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Message:: [QUOTE="GDJMSP, post: 2831339, member: 112"]Highly unlikely. The 1st looks to have been harshly cleaned already to me. And what remains appears to be, to me anyway, good old fashioned dirt and grime that normally accumulates on a coin in circulation. Usually, distilled water works best at removing that, but it can prove to be quite difficult at times to get off. The 2nd coin looks to be darkly toned. It's possible someone may have tried to rub it off (which would make it harshly cleaned if they did), or it have toned that way because part of the coin was covered by something over the years. Regardless, about the only thing that will remove it is a coin dip. And if ya did that, you'd a very weird looking coin with little to no improvement at all. In fact it might even look worse. And when people say that acetone works on "organic materials", well, yeah it does. But it depends on what those organic materials are ! There's a lot of "organic materials" that actone won't do a dang thing to, while distilled water often will. And there are other "organic materials" that acetone won't remove, but xylene will. My point is this, organic materials is kind of a catch-all phrase that really shouldn't be used when is trying to tell others what acetone will do and not do. There is a short list of things that acetone will effectively remove and that's about it.[/QUOTE]