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<p>[QUOTE=&quot;SuperDave, post: 2668013, member: 1892&quot;]Although it&#039;s quite possible for silver to develop verdigris - and happens all the time - as a generality if I see something green on silver which obviously isn&#039;t toning, the assumption is it&#039;s PVC plasticizer nastiness and the coin is either a pass or gets cracked as soon as I own it. There&#039;s no guarantee it was green when the TPG handled it, because the early stages of the infection don&#039;t show that color, although there are plenty of examples of slabbed coins which were plainly infected when they were slabbed. &quot;57th Street Hoard,&quot; I&#039;m looking at you. <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie7" alt=":p" unselectable="on" unselectable="on" />[/QUOTE]</p><p><br /></p>

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