Leaving it in distilled water for a few days will loosen the gunk, then use acetone. I would rinse it with distilled water after just to get any acetone left on it. If it was obvious you did this though exposing uneven toning I would just leave it. As a general rule, I tend to only soak coins that have some sort of corrosion looking to remove it to prevent further damage or have PVC damage on the coin. Of course I want to improve the appearance as well. The presence of dirt can sometimes be good since it proves it hadn't been cleaned.
Edited by buddy16cat
03/03/2013 04:49 am