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<p>[QUOTE=&quot;Maxfli, post: 3441393, member: 69089&quot;]&quot;Quirks&quot; is a good way to describe my two bad experiences with bronze and acetone. One was a 1942 British India 1/4 Anna...turned almost as pink as cotton candy. Don&#039;t recall what the other coin was.</p><p><br /></p><p>I&#039;ve soaked hundreds of circulated bronze coins in acetone with no issue whatsoever. I can only assume that in those two instances, I was dealing with either a metallurgical anomaly, or some kind of &quot;perfect storm&quot; of environmental conditions that produced those unpleasant results.</p><p><br /></p><p>I will still occasionally put a bronze coin in acetone, but only for short periods like 30-60 seconds.&nbsp; Otherwise, I&#039;ve found that xylene is a safe and reasonably effective substitute for removing organic gunk from coins.[/QUOTE]</p><p><br /></p>

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