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<p>[QUOTE="buddy16cat, post: 1468554, member: 37356"]The 80% number is a number thrown around here by some members here but not a proven statistics but if you look threw Ebay and coin shops you start to believe that number and these are the obvious cases of cleaning or the fact they are cleaned is disclosed. I returned a coin for being cleaned at a coin shop and that appeared to be a case where gunk was removed which to me seems acceptable. I didn't return it for being cleaned, just because it was not discounted because of it. If you include those cleaned just by being carried in somebody's pocket that number may be greater since dirt and grit are removed from the coin when you carry them in your pocket. I had to clean a 1949 roosie I found in a roll just because the gunk was so thick, I couldn't see the mint mark. I started with the least abrasive, soaking in distilled water but had to get more agressive. First I tried acetone for a few days, nothing--Soap and water, nothing. Finally I soaked it in vinegar and that worked. The circular contact marks are not as evident in the reverse because of some re-tonng but I see them. Maybe I will just leave this in an air-tight in a cool, dark place and maybe nature will take care of them.[/QUOTE]</p><p><br /></p>
[QUOTE="buddy16cat, post: 1468554, member: 37356"]The 80% number is a number thrown around here by some members here but not a proven statistics but if you look threw Ebay and coin shops you start to believe that number and these are the obvious cases of cleaning or the fact they are cleaned is disclosed. I returned a coin for being cleaned at a coin shop and that appeared to be a case where gunk was removed which to me seems acceptable. I didn't return it for being cleaned, just because it was not discounted because of it. If you include those cleaned just by being carried in somebody's pocket that number may be greater since dirt and grit are removed from the coin when you carry them in your pocket. I had to clean a 1949 roosie I found in a roll just because the gunk was so thick, I couldn't see the mint mark. I started with the least abrasive, soaking in distilled water but had to get more agressive. First I tried acetone for a few days, nothing--Soap and water, nothing. Finally I soaked it in vinegar and that worked. The circular contact marks are not as evident in the reverse because of some re-tonng but I see them. Maybe I will just leave this in an air-tight in a cool, dark place and maybe nature will take care of them.[/QUOTE]
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