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RobertOf the major grading companies GAI, SGC, PSA and whatever else if you had a Vintage HOF graded a 7 which holder would bring the most $'s if sold on EBAY...in regards to auction houses I don't think that it really matters which one of the big 3 grades it because it is mostly experienced buyers in the loop. Even though I am not the biggest fan of PSA, I think being slabbed by them does bring in more. I am about to send out 100 cards to be graded for sale on EBAY and want to get some opinions on who I should use.
Thanks