The 1950 Japanese Menko baseball card set features 52 leading Japanese players printed as playing cards, plus a joker featuring Babe Ruth. This uncut sheet was offered for sale in August 2003.
It’s one of the few times that Babe Ruth appeared on a Japanese card. The sheet was described as being 15” x 10-1/4”, off-center left, printed on both sides with a slight darkening on the back at the bottom, and with minor soiling at the lower right on the front that doesn’t affect any cards; EX/MT overall.
I don’t know much about Japanese baseball cards, but I did pick up a few books for the Hobby Library by noted niche expert Gary Engel.
Also, these sheets seem relatively common (Engel confirms this in the 6th Edition of his Japanese Baseball Card Checklist and Price Guide, mentioning that this set is generally found as an uncut sheet), with recent prices averaging a few hundred dollars but trending up; there are a few outliers over $1k.
You can download a digital version of Engel’s guide here.