Very interesting research. Thanks for sharing Jason. From all of the discussions on the board, I thought PSA was the best way to maximize your value for vintage cards (42-79) and SGC for pre-war.
Maybe the size of the holder plays a factor? I would imagine 500+ PSA cards take up significantly less room than 500+ SGC cards.
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Mantle Master Set - as complete as it is going to get
Yankees Game Used Hat Style Run (1923-2017): 57/60 (missing 2008/9 holiday hats & 2017 Players Weekend)
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