Vintage Stamps and Grading
 

What are the grading standards for SGC and PSA when a card has a vintage stamp? It seems like there is a lot of variation. I have seen some cards with a vintage stamp get poor grades or qualifiers, and at other times it seems like there is almost no penalty at all for a vintage stamp (as the example below would suggest). And when does a stamp become "vintage" ?

Any clarification on this?


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