This 1949 Leaf Johnny Hopp card is a clear example of a "wet sheet transfer" (WST). Many similar WST are found with 1933
Goudey's (most are not as clear as this Leaf card).
These three Bowman cards are examples of "printer's prep", prior to an actual press run. Scrap sheets are overprinted with
subsequent series (or issues) in order to proof the image or clean the ink off the plates.
The two 1948 Bowman Basketball cards have 3 images on their backs......
1....the front player's bio
2....the bio of a 1948 Bowman Football player
3....Front image from the 1948 Bowman Movie star set
The 1st Series 1949 Bowman BB of Carl Scheib has an overprinted image of Bill Salkeld (who is pictured in the 3rd Series of
this set).
TED Z