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Message:: [QUOTE="tcore, post: 173643, member: 2949"]Okay, my grandparents had some old silver coins stashed away. Most of them have been left loose in old coin purses that look to have a leather or fake leather lining. There are also quite a few that have been thrown in together in a big paper envelope. I would venture to guess that they've been stored in this way for the better part of the past 40 or 50 years at least! A large majority of the coins have what appears to be a light green haze over them, particularly on the edges of the coins. It's not big, bold spots of green (in most cases), but just a hazy film over the edges of the coins. Mind you, these are mostly 90% silver coins with some 40%'s thrown in too, not copper. So, what could this be? Do you think it might be verdigris of some sort? And, what should I do about it? I want to remove it from the coins. What do you think I should try? For the most part, these are what most would term "junk" silver coins, so no big rarities here. For the couple of rarer coins that have issues, I'm thinking of sending those to NCS anyway. I tried to take pictures of the haze, but it doesn't show up in the pictures. Also, in some lighting conditions, it can hardly be seen. In others, it's much more noticeable. Any ideas? Thanks![/QUOTE]