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Removing Crud from old Copper Coins - Olive Oil?
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<p>[QUOTE="hotwheelsearl, post: 5193169, member: 75143"]It depends on how valuable the underlying coin is and your tolerance for ruining the surface vs removing the encrustations.</p><p><br /></p><p>I tend to clean my low value ancient coins with harsh chemicals and mechanical tools - I value strong details over a natural patina, basically.</p><p><br /></p><p>lye removes verdigris pretty effectively; any blue deposits will be taken off by vinegar and brown tends to be removed by sodium thiosulfate[/QUOTE]</p><p><br /></p>
[QUOTE="hotwheelsearl, post: 5193169, member: 75143"]It depends on how valuable the underlying coin is and your tolerance for ruining the surface vs removing the encrustations. I tend to clean my low value ancient coins with harsh chemicals and mechanical tools - I value strong details over a natural patina, basically. lye removes verdigris pretty effectively; any blue deposits will be taken off by vinegar and brown tends to be removed by sodium thiosulfate[/QUOTE]
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Removing Crud from old Copper Coins - Olive Oil?
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