The card on the left features Tigers star and HOFer Fumio Fujimura. He is one of several Babe Ruth type players who was a star both on the mound and at the plate in his early career, then mainly at the plate later in his career. As a pitcher he posted a career 34-11 record. His best pitching season was in 1946 when he went 13-2 with a 2.44 ERA. Four years later, in 1950, at the plate he set the single season hit record in Japan with 191 (in a 140 game season). That record would last until 1994 when Ichiro Suzuki broke it.
The card on the right is Takehiko Bessho, another HOFer who I've written about before so won't repeat his biography.
I'm not sure if these cards belong to the same set or not. The team names are written in katakana on both, which is unlike any set listed in Engel's catalogue. The style of artwork is also similar, and the rock/paper/scissor symbol is the same. But the player names are written in different styles as are the menko numbers, so these might be from different sets. Bessho is pictured as a member of the Nankai Hawks who he played for between 1946 and 1948 so likely the set (or sets) dates to one of those years (Fujimura played his entire career for the Tigers so his card doesn't help with the date).
As you can see, neither of my cards is exactly what you would call high grade. Anybody know how PSA treats massive vertical gouges across the entire length of a card that are so deep they nearly cut it in half? I'm guessing they would ding me for that if I were to ever submit them.