JCM 13d: 1961 Marusho Flag Back

JCM 13d: 1961 Marusho Flag back is one of a few similarly designed card series. This one has a flag in the top left, and a weird bubble-shaped question mark in the top right. And this one does have the manufactuer's symbol on the back, which other varieties don't. There are 61 cards, measuring 1 13/16" x 3". Again, the backs have repeated (but unique) numbers, so it's a question of matching up the back number and the player's uniform (on front and back of the card) to the player in the guide, or just reading the player's name on the front.