How should I (or should I?) go about getting this green goo off? Acetone is my best guess as of right now. It has been like this since I got it, so I don’t know what’s underneath. Thanks to everyone in advance!
I don't think it matters. It is unlikely acetone will get the green verdigris off. Try this thread to see if it helps. https://www.cointalk.com/threads/homemade-verdigris-formulas.353980/
1866 shield an acetone bath wont hurt this it may help remove some ,verdicare would clean off the vergis the green. Looks to be an 1866/66 where did you aquire it?
Sorry, you are starting with nothing. The coin is worn to death. If there is a certified “poorest known”, you are there, but I don’t understand that market.
Reread your title. A dip will only make the coin, including the green, shine brighter. Best not to dip.
Do not use fingernail acetone. You need industrial strength. The fingernail acetone will permanently take the finish off of the coin. Industrial acetone will not.
Acetone will have no effect on that, it won't remove any of it. Verdi-Care is the only thing that will have any effect on it, and even Verdi-Care will only remove some of it. When verdigris is that heavy on a coin you can almost never get all of it off without harming or doing damage to the coin. Even the guy who makes Verdi-Care will tell you that.