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<p>[QUOTE=&quot;GDJMSP, post: 3229812, member: 112&quot;]I never tried with aluminum, stainless, or just plain zinc. I have successfully cleaned Zincolns though.</p><p><br /></p><p>But it when comes to copper, including Zincolns, I always recommend that acetone NOT be used as acetone can sometimes, stress sometimes, cause copper to tone weird colors later on. Instead of acetone, use xylene on copper and follow the same procedures I&#039;ve outlined.</p><p><br /></p><p><br /></p><p><br /></p><p><br /></p><p><br /></p><p>As Larry said, never rub coins with anything - not your finger, not a cloth of any kind, not grease, not ANYTHING ! The last thing you ever want to do is to even touch the surface of a coin - anywhere but by the edges.[/QUOTE]</p><p><br /></p>

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