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<p>[QUOTE=&quot;LindeDad, post: 1253351, member: 31518&quot;]Just to add that if the coin was repaired (doctored) with putty rather than a laser then is where the PCGS sniffer comes into play.</p><p>The sniffer is also used to dectect chemicals used to tone many coins as well.</p><p>It is my understanding that lasering is more often used on proof coins, and puttying is more common on circulation coins. And both of these practices have led to law suites being filed.[/QUOTE]</p><p><br /></p>

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