Quote:
Originally Posted by glchen
The other thing is that, and this is not really an overgrade, but more of a difference in grading philosophy, but SGC is much more lenient on diamond cuts than PSA IMHO. The Gehrig that was slabbed by SGC as 3, probably would have received an Authentic from PSA.
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Grading companies have the right to define their own grading standards. However, nowhere in SGC's or PSA's standards does it say that diamond cuts (or cards with erasure marks) receive an automatic "Authentic." I'm not sure where you came up with that.