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JimBAnd I think it is obvious that higher-grade T and E cards are submitted at a greater rate than low grade ones for obvious reasons. In other words, I think a much larger percentage of the T206 red portrait Cobbs in NM or better have been submitted than the percentage of those in lower grades. This also skews the numbers, though high grade cards from that era still make up an incredibly low percentage of graded cards from the era - even though they are submitted at a relatively much higher rate.
JimB