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<p>[QUOTE=&quot;quarter-back, post: 1801944, member: 47022&quot;]I have been placing many of my proof coins in better holders and have been giving them an acetone bath to remove any dust or stuff leftover from the proof packaging.&nbsp; I have noticed that water condenses as the acetone evaporates, especially on the large dollars.&nbsp; It is extremely high grade acetone, so it is likely that that the cooling associated with evaporation is the cause rather than water in the acetone.&nbsp; I was wondering how others deal with this.&nbsp; Obviously the water droplets evaporate, but I&#039;m not confident that some residue is not remaining.&nbsp; TIA for any insights.[/QUOTE]</p><p><br /></p>

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