Thank you. The one on the right appears to be more like corrosion (stuff that can actually be picked off the coin). Any tips for that? It's an...
Which is the coin exhibiting the extensive verdigris? The middle one, right? In this case, I'm really just trying to determine the type of...
I've been doing a lot of research about cleaning / preserving copper coins lately, but still aren't entirely clear on a lot of the condition...
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