I agree with others, it's almost assuredly a fantasy piece. I doubled checked in Gary Engle's book and the only two issues released concerning the Tour of Japan are both bromides. One is 1 13/16” x 2 9/16 and features the player's name and position written in Japanese on the front. The other is postcard sized and had Ruth's facismile signature on the front.
As for print characteristics, I'm far from an expert, but as someone else mentioned - Bromides are more photo like and were released on photo paper or thin stock. I've attached one of mine for reference.
