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<p>[QUOTE=&quot;buckeye73, post: 4570661, member: 93155&quot;]Unlike silver coins, acetone treatment of copper or copper plated coins can result in an undesirable, unnatural coin color.&nbsp; I would agree with Oldhoopster regarding frequent monitoring of the soaking coin.&nbsp; Another option is to do a test run on one or more similar common zincolns in which there would be no loss of coin value with negative results.</p><p>Dan[/QUOTE]</p><p><br /></p>

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