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<p>[QUOTE=&quot;Spark1951, post: 6459348, member: 90692&quot;]An acetone bath to remove organic grime won’t hurt them nor render them “cleaned”.&nbsp; The problem is <i><b>improperly</b></i> cleaning because you don’t know what you’re doing.&nbsp; Making them “shiny” makes them appear un-natural.&nbsp; Acetone will not disturb the surfaces, but it is not foolproof.&nbsp; Removing dirt and grime may expose a protected area and leave the coin with a mottled appearance...jmho...Spark[/QUOTE]</p><p><br /></p>

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