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<p>[QUOTE=&quot;desertgem, post: 528287, member: 15199&quot;]The&nbsp; 91 in the ID number indicated &quot; questionable color &quot;. I don&#039;t think PCGS states in its FAQ that this means it <b>IS</b> AT, just that it is questionable, so they decline to grade the coin. To me it would be questionable also. </p><p><br /></p><p>Since toning is a chemical process, Artificial can be the same chemical process as Natural, just &quot;pushed&quot; along by man&#039;s intervention, and no process can tell them apart. You see some who &quot;authoritatively &quot; say it is AT or NT, but unless it is poorly done, or used an un-natural chemical reaction to get colors not obtained in nature, one can only say &quot;my opinion&quot;.</p><p><br /></p><p>I am very sure many AT coins are in any TPG&#039;s holders, but since no one knows if the reaction occurred in 2 days or 2 decades, those that appear feasible are graded, those questionable are not.</p><p><br /></p><p>Jim[/QUOTE]</p><p><br /></p>

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