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<p>[QUOTE=&quot;TheEgyptian, post: 2637539, member: 85025&quot;]Ive experimented on cleaning coins too damaged by PVC to be worth anything in the first place. Acetone works best. Ive worked with Nail polish remover, and theres just too much other stuff in there to clean the gunk off. Usually within 12-24 hrs you&#039;ll get the majority of gunk off using Acetone. If it doesn&#039;t come off, try Ammonia for another 12 hours. If it doesn&#039;t come off, then you&#039;re pretty much stuck. You don&#039;t want to use any acidic cleaners because those eat at the metal, and you don&#039;t want to remove rust because that leaves pits in the coin surface (as long as the rust is a light green you should be fine, if its dark, then its rust from the metal not on the surface, and if its white, its in bad shape, though copper shouldn&#039;t have white rust). The idea is to remove the heavy dirt and sticky gunk that is deposited on the coins.[/QUOTE]</p><p><br /></p>

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