Printing of the 1948 BOWMAN set is quite interesting, as the printer took their 36-card production sheet and produced a 48-card set. In their 1st press runs
they printed cards #1 - 36. Then in their 2nd press runs they modified their printing plates by replacing 12 cards in the first group of 36 with cards #37 - 48.
The uncut 36-card sheet shown here is from the 2nd press runs where cards #37 - 48 are interspersed among the lower number cards.
Thereby, this process created Double-Prints of 24 low numbers....Single-Prints of 12 low numbers....and, another set of Single-Prints of the 12 high numbers.
TED Z