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<p>[QUOTE=&quot;GDJMSP, post: 25328230, member: 112&quot;]Acetone will only remove <u>fresh</u> fingerprints. Once fingerprints have been on a coin for a week or a bit longer, acetone will no longer remove them. That&#039;s because the body oils that cause fingerprints are acidic and the acid in them will etch right into the metal. </p><p><br /></p><p>Now sometimes prints that have become etched into the metal can be safely removed with coin dip, but if the etching is deep enough even that won&#039;t work without permanently damaging the coin.[/QUOTE]</p><p><br /></p>

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