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<p>[QUOTE=&quot;GDJMSP, post: 756244, member: 112&quot;]The subject has been discussed on this forum, but not every often. This thread will help a bit - <a href="http://www.cointalk.com/t57319/" class="internalLink ProxyLink" data-proxy-href="http://www.cointalk.com/t57319/">http://www.cointalk.com/t57319/</a></p><p><br /></p><p>Putty on coins is not discussed, at least on this forum, very much because few people have ever even heard of it, let alone be able to recognize it if and when they see it. But it is used a whole lot more than most would ever think. And the vast majority of people are fooled by it - even profesional graders.[/QUOTE]</p><p><br /></p>

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