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<p>[QUOTE=&quot;GDJMSP, post: 1430981, member: 112&quot;]Not really. If they did then you could trace and date the slabs and thus track the grading practices and changes in their grading standards.</p><p><br /></p><p>Not something they are likely to want you to be able to do <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie2" alt=";)" unselectable="on" unselectable="on" />[/QUOTE]</p><p><br /></p>

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