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<p>[QUOTE="brinssig, post: 2745344, member: 12147"]I recently bought some raw uncertified Morgan dollars from a dealer. I noticed after a few weeks some dark areas have started to develop on the coins. I noticed one time I was in the coin store the dealer had treated an uncirculated coin that had pvc on it and had rinsed it off with tap water and dried off the coin by patting it with a paper towel. Since tap water can contain high levels of salt can rinsing off a coin with tap water cause any corrosion on the coin? Can the flouride in tap water also affect coins? I suspect that my coins may have been treated before I had bought them. Would I cause further harm to the coins if I rinsed them off with distilled water to rinse off any salt? Also, is there anything in the paper towel that would be bad for coins?[/QUOTE]</p><p><br /></p>
[QUOTE="brinssig, post: 2745344, member: 12147"]I recently bought some raw uncertified Morgan dollars from a dealer. I noticed after a few weeks some dark areas have started to develop on the coins. I noticed one time I was in the coin store the dealer had treated an uncirculated coin that had pvc on it and had rinsed it off with tap water and dried off the coin by patting it with a paper towel. Since tap water can contain high levels of salt can rinsing off a coin with tap water cause any corrosion on the coin? Can the flouride in tap water also affect coins? I suspect that my coins may have been treated before I had bought them. Would I cause further harm to the coins if I rinsed them off with distilled water to rinse off any salt? Also, is there anything in the paper towel that would be bad for coins?[/QUOTE]
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