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<p>[QUOTE=&quot;Spark1951, post: 3721083, member: 90692&quot;]Googled and found from Coin Talk Apr. 2, 2007, Coin Chat forum by [USER=4373]@gxseries[/USER] ...”Using acetone on copper coins - the scientific results are out”.&nbsp; Read and apply however it works for you.&nbsp; Do test pieces with some cannon fodder Zincolns.</p><p><br /></p><p>After reading this 12 YO post, it seems the length of time and ambient light are 2 factors to consider before using acetone on copper coins.</p><p><br /></p><p>However, for most folks, using acetone for short periods of time ( I have never soaked longer than 6 hours for any coin and never in sunlight) like 1-60 minutes, there should be no adverse results.&nbsp; Especially if you rinse with distilled water and pat dry.&nbsp; I have used acetone sparingly but regularly for the past 6 years and I have seen no detrimental result for any denomination...Spark[/QUOTE]</p><p><br /></p>

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