Question about Rick Barry J.D. McCarthy postcards
I’m interested in picking up Rick Barry’s first pre-rookie issue, and I believe he has 3 J.D. McCarthy postcards. I’ve seen a wide range of years associated with these. Is one of the 3 known to have been issued first? Along the same lines, is one of the 3 considered more valuable than the others? I know a mailing stamp is one way to definitively nail down a date, but I’d like to get Barry’s first issue if it’s possible to figure out.
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