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<p>[QUOTE=&quot;Bill in Burl, post: 1785333, member: 23692&quot;]Canadian large cents don&#039;t turn dark towards the edges.&nbsp; What you have is a chemical reation there where it has been handled or in a holder.&nbsp; PVC corrosion starts to turn things dark if it doesn&#039;t stay green.&nbsp; Acetone SOMETIMES will take it off.&nbsp; Look through a loupe and see if it&#039;s all on the surface ..if so acetone will take it off ..but don&#039;t sniff it![/QUOTE]</p><p><br /></p>

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