BTW, do you ever think that PSA and SGC pop reports are missing cards that are graded? This might be more true of sets that aren't popular or are rare. For example, the 1935 Schutter Johnson "I'm Gonna Be..." set shows very few cards graded by SGC (and only 4 different cards). Yet the set registry for that set from RStuckemeyer shows more cards at grades that aren't on the pop report for SGC, and practically all cards from the set.
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