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Posted By: JimCrandell

First of all, of course the gem mint grade is not arbitrary.

There are a large number of submitters who go through modern cards very carefully trying to pick out the 10s from the 9s--many of them with great success.

Nobody is saying PSA is perfect but without question the average 10 is a grade up from the average 9 just like 8s are a grade up from the 7s.

Look at the 10s--they appear to be perfect--the 9s are hit and miss.

Are the 10s worth 5-10X a 9--most of the time no but if it is a pop 1 psa 10 in a vintage set any day of the week.