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<p>[QUOTE=&quot;GDJMSP, post: 402641, member: 112&quot;]Andy what grading standards have you read ? They all lists these things as the criteria upon which to judge grade - </p><p><br /></p><p>Contact marks</p><p><br /></p><p>Hairlines</p><p><br /></p><p>Luster</p><p><br /></p><p>Eye appeal</p><p><br /></p><p>Quality of strike</p><p><br /></p><p>Degree of wear if any</p><p><br /></p><p>Now how does a machine learn to judge luster and eye appeal ? For that matter, how does a machine differentiate between a break in the luster being due to wear or being due to a weak strike ?[/QUOTE]</p><p><br /></p>

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