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<p>[QUOTE=&quot;Sallent, post: 3585449, member: 76194&quot;]No! No acetone on copper, bronze, or billon coins. Keep acetone away from any coin that&#039;s not at least 50% silver, otherwise you will be very disappointed with the end result.</p><p><br /></p><p>Distilled water is best for those coins.</p><p><br /></p><p>Last time I dropped a bronze ancient in acetone (by accident as I was working on some silver coins at the same time I was handling that bronze coin) the patina became dull as heck, and all character and color disappeared. It looked terrible. I was lucky that Verdicare made it look about 85% as good as it looked before the accidental dip in acetone. Otherwise I don&#039;t know what I would have done with that coin.[/QUOTE]</p><p><br /></p>

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