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<p>[QUOTE=&quot;Taxidermist, post: 1541863, member: 24849&quot;]You can&#039;t undone cleaning, but you can place them in certain environment where they could re-tone naturally, its easy with copper/bronze. If the cleaning damage is not too extensive, in a year or so they won&#039;t look cleaned at all. Couple of years ago I tossed some copper coins into an environment that turned out to be &quot;tone-friendly&quot;. In few weeks they started changing color from cleaned shiny red to toned brown, and in a year they looked old an naturally toned, no cleaning signs under loupe (as far as I could tell of course). I don&#039;t consider it AT.</p><p><br /></p><p>If you`re uncomfortable with the thought you have coins that were cleaned, then just upgrade.[/QUOTE]</p><p><br /></p>

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