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Old 10-16-2025, 08:48 AM
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R@ndy Hart.soe
 
Join Date: Nov 2019
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Quote:
Originally Posted by Zach Wheat View Post
Shane Dale posted a 25 card test and posted the results in a YouTube vid:

https://www.youtube.com/watch?v=e7YDVE30TVc

TLDW summary - GM was pretty accurate overall.
Or was PSA so inaccurate as everybody on here claims and the cards were not really NM/M or better?

If you think Greg Morris' graders are very accurate and on a supposedly random lot of 25 cards, PSA was at 88% agreement with GM, that should mean they are also very accurate.

Clearly, the Miscut card was mis-graded by GM so I would say based on this small sample, PSA is very good at grading cards IF GM is also very good.
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