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<p>[QUOTE=&quot;Michael K, post: 26365997, member: 78298&quot;]If you clean any valuable coins, you are going to learn a lesson the hard way.</p><p>It&#039;s true that some coins have been &quot;cleaned&quot;, but more likely dipped or conserved in an acceptable manner if it is in a graded holder, or possibly &quot;retoned&quot;. From the OP who is gone as this is 12 1/2 years old: &quot;using acetone IS CLEANING. yet everyone seems okay with that.&quot; Acetone does not do anything to the metal. It only removes organic material. Magic marker, pen, glue residue etc. And then rinsed in distilled water. Air or lightly pat dry. There is no rubbing, there is no friction, there is no cleaning, there is no layer of patina scraped off to get to the shiny stuff below.[/QUOTE]</p><p><br /></p>

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