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<p>[QUOTE=&quot;Marshall, post: 898963, member: 21705&quot;]I&#039;d still send it to NCS. Verdigris is natural when exposed to chemicals often in the air (usually a sulpher based trace element). It doesn&#039;t have to be a result of PVC. Green is not good for coins though it is prized on statuary. Since NCS works with NGC, it&#039;s got a package that PCGS doesn&#039;t have. </p><p><br /></p><p>I sincerely doubt that either would grade it with verdigris from any source and MAY if conserved properly before the damage is irreversible.[/QUOTE]</p><p><br /></p>

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