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<p>[QUOTE=&quot;paddyman98, post: 2106195, member: 44615&quot;]I don&#039;t know if this would answer any of your questions but I have a friend who knows a person over at NGC and he was told that one process used to see if a coin was Improperly Cleaned is using a special lamp and light to see if any type and which type of chemical was used during cleaning. Sounds like forensic science to me. My very first error coin I ever found (A Cent with Lamination) that I sent to NGC came back Improperly Cleaned.[/QUOTE]</p><p><br /></p>

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