When I looked at overall populations of the 150 only and a few others a few years ago the Hof cards seemed to be about double the number of the commons.
I put that down to higher demand and grading returns.
Have you noticed the same thing?
I didn't look at factory differences, it may be long enough ago that PSA wasn't doing them then.
I think this sort of deeper look at what data we can get is going to eventually be a key to sheet composition. For example, backing out from High demand/low demand, and getting approximate numbers can show that the 2:1 and 4-5:1 were not on the same sheets.
It would be interesting to compare this data to the Plate scratch reconstruction Pat has done. That might answer if production was done as generic fronts that got specific backs to fill orders, or if each brand got their own.
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