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<p>[QUOTE=&quot;rzage, post: 1795361, member: 14070&quot;]I think the tpgs take a is it market acceptable approach . Still they have flagged coins as cleaned that haven&#039;t been just like they have graded coins that have been . It&#039;s a known fact that tpgs dip coins and &quot;conserve&quot; problem coins . So like you said unless it has been over dipped , scrubbed , and boiled they really can&#039;t say with certainty in 100% of the cases . Though they are quite good at telling if most coins have been tampered with just with their experience of seeing so many coins. Have you ever seen a coin that just quite doesn&#039;t look right , that&#039;s your experience telling you something happened , as you see more that happens more and more , but sometimes they&#039;re wrong . By the way , since the &quot;sniffer&quot; came out it can flag left over chemicals on coins with a good amount of certainty .[/QUOTE]</p><p><br /></p>

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