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Thoughts on cabinet friction from a professional grader.
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<p>[QUOTE="Lehigh96, post: 3503631, member: 15309"]Cabinet friction is used synonymously with roll friction. So while finding a coin with cabinet friction might be difficult, finding coins with roll friction is extremely easy, especially in some series that are plagued by it (eg Saints & SLQs).</p><p><br /></p><p>The TPGs differentiate between wear and roll friction by looking for some evidence of contact in the fields of the coins rather than isolated high point wear.</p><p><br /></p><p>I have had this argument at length with Doug several time in the past on this forum. I don't need to re-litigate it again, but the short version of my point is, do you want the following coins to have the same grade?</p><p><br /></p><p><img src="https://i.imgur.com/RRvOtOJ.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /></p><p><img src="https://i.imgur.com/mydMY1Y.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /></p><p><img src="https://i.imgur.com/tbZbMHs.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /></p><p><img src="https://i.imgur.com/ngidMsW.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /></p><p><br /></p><p>Both coins show friction on the knee and breast, but there is an undeniable difference in quality between the two coins. If you believe that "wear is wear" and that any coin with high point friction is relegated to AU, then both of these coins would be graded AU58. Under the TPG methodology that I agree with, the first coin would be graded either AU58 if they think there is field friction or low MS whereas the second coin would be graded premium gem.</p><p><br /></p><p>So my question to you is, do you think these coins should be the same grade?[/QUOTE]</p><p><br /></p>
[QUOTE="Lehigh96, post: 3503631, member: 15309"]Cabinet friction is used synonymously with roll friction. So while finding a coin with cabinet friction might be difficult, finding coins with roll friction is extremely easy, especially in some series that are plagued by it (eg Saints & SLQs). The TPGs differentiate between wear and roll friction by looking for some evidence of contact in the fields of the coins rather than isolated high point wear. I have had this argument at length with Doug several time in the past on this forum. I don't need to re-litigate it again, but the short version of my point is, do you want the following coins to have the same grade? [IMG]https://i.imgur.com/RRvOtOJ.jpg[/IMG] [IMG]https://i.imgur.com/mydMY1Y.jpg[/IMG] [IMG]https://i.imgur.com/tbZbMHs.jpg[/IMG] [IMG]https://i.imgur.com/ngidMsW.jpg[/IMG] Both coins show friction on the knee and breast, but there is an undeniable difference in quality between the two coins. If you believe that "wear is wear" and that any coin with high point friction is relegated to AU, then both of these coins would be graded AU58. Under the TPG methodology that I agree with, the first coin would be graded either AU58 if they think there is field friction or low MS whereas the second coin would be graded premium gem. So my question to you is, do you think these coins should be the same grade?[/QUOTE]
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Thoughts on cabinet friction from a professional grader.
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