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<p>[QUOTE=&quot;Eduard, post: 1449702, member: 8959&quot;]I don&#039; know if this is the best methsd, but I just leave them on a tray by a window sill (and hope my wife does not wipe them with a wet cloth when she cleans). She actually did that once, until I told her that she had just wiped over $20000 worth of coins..... </p><p><br /></p><p>Anyway, i have observed that silver tones much faster than copper - this somewhat contradicts what I know about copper&#039;s reactivity (ability to oxidize), v.s silver. I have a few old coppers on the trays, and after a few years at least one of them is looking quite nice. It take a long time if you do it this way, but that is OK with me.[/QUOTE]</p><p><br /></p>

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