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Is it okay to clean ancient silver and bronze coins?
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<p>[QUOTE="Eyestrain, post: 998158, member: 24213"]A good start is soaking them for several months in distilled water (not tap water, not mineral water). Change the water a few times along the way to freshen it up and get rid of the dirt that's coming off easily. Given enough time, a lot of the muck should loosen up. It won't be enough for most of the coins, but you'll be able to better tell if you're dealing with unidentifiable slugs or something with potential. Try gently brushing with an old toothbrush to see what crud will flake off without much help. An olive oil soak for a similar amount of time should be the next (messier) step. Only after exhausting these gentlest of techniques would I up the stakes for more stubborn coins, with electrolysis being the last resort for some ancient coin cleaners. There are dozens of ways to torture the dirt off of ancient coins, and plenty of articles on the subject that can be quickly goggled. Read up on it before you do damage to an encrusted coin that might have otherwise turned out to be an interesting collectible.[/QUOTE]</p><p><br /></p>
[QUOTE="Eyestrain, post: 998158, member: 24213"]A good start is soaking them for several months in distilled water (not tap water, not mineral water). Change the water a few times along the way to freshen it up and get rid of the dirt that's coming off easily. Given enough time, a lot of the muck should loosen up. It won't be enough for most of the coins, but you'll be able to better tell if you're dealing with unidentifiable slugs or something with potential. Try gently brushing with an old toothbrush to see what crud will flake off without much help. An olive oil soak for a similar amount of time should be the next (messier) step. Only after exhausting these gentlest of techniques would I up the stakes for more stubborn coins, with electrolysis being the last resort for some ancient coin cleaners. There are dozens of ways to torture the dirt off of ancient coins, and plenty of articles on the subject that can be quickly goggled. Read up on it before you do damage to an encrusted coin that might have otherwise turned out to be an interesting collectible.[/QUOTE]
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