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<p>[QUOTE=&quot;Leadfoot, post: 528484, member: 2972&quot;]In my experience, the only way to stop it completely is to completely remove the corrosion, strip the coin, and recolor/oil it -- and even then it doesn&#039;t always work -- as sometimes it is a result of impurities in the metal itself (particularly true for the older coppers).&nbsp; Proper storage of the coin can slow it down to a virtual standstill, but once corrosion starts, its effects are difficult/impossible to undo.[/QUOTE]</p><p><br /></p>

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