Go to keyman collectibles site. It look like that is where they got date from. I do not agree 100% with them (JMHO) BUT I believe that PSA also uses the same formula to calculate game dates.
I have really tried to stay with dated stubs but they make quests like yours even more difficult. I have a group of Shea stadium yankee stubs around someplace I will look and see if any are Catfish games. And I agree Catfish Hunter was a Great pitcher good luck with your mighty task.
Jonathan
Last edited by bigfanNY; 12-17-2020 at 11:40 AM.
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