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<p>[QUOTE=&quot;mrbrklyn, post: 444272, member: 4381&quot;]Oh - and here is the other issue.&nbsp; Anyone with any experience in such processes such as say making tires or glass or coins, such as grading a coin should be compared to when done in mass, would laugh at this whole notion because processes can only be validated for degree of precision which entails error.&nbsp;&nbsp; If you grade something a 65, the process will produce acceptable outcomes of 64 and 66 and still be valid.</p><p><br /></p><p>There is no such error in a 70 graded coin, at least not according to those markets or the proponents of the TPGers.&nbsp; I&#039;d be happy if they had a process that could validate to the standard deviation of 1.5 in the 90th percetile.&nbsp; I doubt it make even the 30th percentile.&nbsp; I know that if you crack those coins out the majority will return 69.</p><p><br /></p><p>Ruben[/QUOTE]</p><p><br /></p>

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