Looking like nothing less than a mashup of 1934 Goudey and 1934-36 Batter-Ups, the 1937 O-Opee-Chee baseball set offered Canadian purchasers 40 black-and-white cards, die cut and ready for bending. Hornsby is the last card in the set (numbering began with #101) and this PSA 1 of the Hall-of-Famer has seen some troubles in its life, although the pop out portion remains intact.  The paper loss at the upper left is the most prominent defect, with rounded corners also in the mix.  1937 O-Pee-Chee's are not something you see every day.