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<p>[QUOTE=&quot;lkeigwin, post: 1255619, member: 30400&quot;]I don&#039;t think you&#039;re being argumentative at all. Good questions.</p><p><br /></p><p>According to Don Willis, PCGS tested thousands of coins of all metals, sizes and designs, including incuse. He said they would have been quite happy with 99% accuracy. But the scanner never made a mistake.</p><p><br /></p><p>100% accuracy, always, is a little much to expect. But it seems the technology is highly reliable. And I don&#039;t believe there are parameters for operators to tweak. It looks like a mindless, clerical job. Of course I&#039;m just going by what I&#039;ve read and seen.</p><p><br /></p><p>Some collectors have asked pointed questions about the technology and, not surprisingly, PCGS was not interested in publicly sharing details. They said they spent $millions on this service and prefer to keep much of it in confidence.</p><p>Lance.[/QUOTE]</p><p><br /></p>

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