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Getting mildew off a silver coin
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<p>[QUOTE="-jeffB, post: 1788821, member: 27832"]Yes, I remember the story, and I'm glad you're interested in preserving the coin.</p><p><br /></p><p>For mildew, I normally scrub with bleach, but that's really really the wrong thing to do with a coin. I haven't done research on this, but it seems like rubbing alcohol dissolves whatever it is that "biofilms" use to stick to surfaces. (I use 91% isopropanol, but I'm guessing regular 70% alcohol would do the trick.)[/QUOTE]</p><p><br /></p>
[QUOTE="-jeffB, post: 1788821, member: 27832"]Yes, I remember the story, and I'm glad you're interested in preserving the coin. For mildew, I normally scrub with bleach, but that's really really the wrong thing to do with a coin. I haven't done research on this, but it seems like rubbing alcohol dissolves whatever it is that "biofilms" use to stick to surfaces. (I use 91% isopropanol, but I'm guessing regular 70% alcohol would do the trick.)[/QUOTE]
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