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<p>[QUOTE="V. Kurt Bellman, post: 2160413, member: 71723"]That really depends entirely what the contaminant is more than the coin's alloy. For PVC, acetone is aces. For many other types of organic schmutz, acetone is still the choice. Dips are the choice for ugly sulfide toning on silver. Most sulfide toning should be left alone. People like it. Go figure. I am utterly unfamiliar with using xylene, and I won't use it until I do more "book learnin'" about it. That's just the way I am. Acetone is a good final bath, after a solid water rinse, no matter what else you monkey with. It leaves nothing behind. Even a bloodhound with the PCGS sniffer cloned onto him will not detect a residue of acetone. I have no idea what Coin Care is supposed to do, because I use NO brand-name anything, not even e-z-est. For my dip, I use my own modification of a published formula once used to clean silver sulfide stains from darkroom towels - Kodak Stain Remover S-10. The formula will appear with a Google search. I dilute it further. It works slowly and doesn't harm luster even after LONG soaking.[/QUOTE]</p><p><br /></p>
[QUOTE="V. Kurt Bellman, post: 2160413, member: 71723"]That really depends entirely what the contaminant is more than the coin's alloy. For PVC, acetone is aces. For many other types of organic schmutz, acetone is still the choice. Dips are the choice for ugly sulfide toning on silver. Most sulfide toning should be left alone. People like it. Go figure. I am utterly unfamiliar with using xylene, and I won't use it until I do more "book learnin'" about it. That's just the way I am. Acetone is a good final bath, after a solid water rinse, no matter what else you monkey with. It leaves nothing behind. Even a bloodhound with the PCGS sniffer cloned onto him will not detect a residue of acetone. I have no idea what Coin Care is supposed to do, because I use NO brand-name anything, not even e-z-est. For my dip, I use my own modification of a published formula once used to clean silver sulfide stains from darkroom towels - Kodak Stain Remover S-10. The formula will appear with a Google search. I dilute it further. It works slowly and doesn't harm luster even after LONG soaking.[/QUOTE]
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