As you can see here and in the rest of this post, the artwork is very attractive. The backs are blank on both reading and picture cards. The background for the reading cards is red with a white catcher line drawing. A similar set is JK 17: 1949 Marumon Karuta, which instead has a right-handed batter in one of two poses. The checklist corresponds to that issue, so it's my belief that this catcher back set is a third parallel or variation.
The cards I got were in pretty poor condition, many missing corners or having some discoloration. They might have been stored in an album of some sort.
The "ra" card went into my type collection, while the rest I'll keep in my collection of random vintage Japanese cards. One of these days, I'll pick up a complete old baseball karuta set.
I have a bonus for you in this post. I also picked up a pair of vintage menko. One was really just a milk cap, but I knew that going in. I wanted this card:
That's all for today! Until next time...