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<p>[QUOTE=&quot;Breakdown, post: 907750, member: 19532&quot;]I would guess that Mark&#039;s definition is probably pretty close. I suspect that market grading started out with people making minor adjustments to known technical standards. In other words, PCGS or NGC knew that a particular coin was a technical MS64 but graded it an MS65 based on market forces (condition rarity, demand, whatever). The unintended result may have been that market grading started out as the exception and, over time, morphed into the standard, leaving the technical standard behind. </p><p>&nbsp;</p><p>By the way, the PCGS definition sounds tautological: &quot;A numerical grade that matches the grade at which a particular coin generally is traded in the marketplace.&quot;&nbsp;&nbsp; But it is PCGS that is assigning the numerical grade to the coin so of course that&#039;s the grade at which the coin is traded in the marketplace.<img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie5" alt=":confused:" unselectable="on" unselectable="on" /><img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie5" alt=":confused:" unselectable="on" unselectable="on" />[/QUOTE]</p><p><br /></p>

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