JCM 32g: 1959 Marumatsu B&W Scoreboard Back

Sadaharu Oh - added 7/26/24

JRM: Uncatalogued #32

Not 100% sure, but this Betto has similar elements - added 7/26/24

JF 24c: 1958 Fujiya Non-Signature Non-Printed Name Caramel Premiums

Shoichi Busujima - added 7/26/24

JF 24a: 1958 Fujiya Signature Caramel Premiums

Akitoshi Kodama - added 7/26/24

JF 24b: 1958 Fujiya Signature and Printed Name Caramel Premiums

Machida Yukihiko - added 7/26/24

JCM 33c: 1958 Yamakatsu Upper Left Glove, B&W

Motoyashiki

Mitamoto

Terada

Shimaboro/Nakanishi/Inao

Morishita

Nakata

Inao

Komatsu

Ladra

Himoto

Sato

Kawakami

Sugiura

Toyoda

- added 3/17/24

Katsuji Morinaga - added 3/22/24

Motoshi Fujita - added 4/28/24

Tsuneo Horiuchi - added 4/28/24

673465 Nagashima - added 7/25/24

512978 Nagashima - added 9/17/24

JCM 37c: 1958 Marusho B&W Military Back Name in Black Box

Nagashima - added 7/25/24

JBR 100a: 1960-61 Boken Oh

Nagashima (Series A) - added 7/21/24

JBR Uncatalogued Heibon Bean Bromide Bookmark

These bookmarks features a number of famous figures, including some baseball players.

Looking more closely, there's:
Kawakami - added 7/19/24

Soraya - added 7/19/24

Oshita - added 7/19/24

Hirooka - added 7/19/24

Kawakami - added 7/19/24

JBR uncataloged c.1959

These were first identified in a Prestige auction. Base on Ohs uniform, it seems to be from 1959. The bromides measure 3 3/8" x 5 1/4" and it was hypothesized they were attached on their left side as magazine inserts.

Sadaharu Oh - added 7/19/24

Sadaharu Oh - added 7/19/24

This Nagashima bromide was found with one of the above Oh cards, and has the same dimensions, so its probable it came from the same series?
Nagashima - added 7/19/24

and then I found the exact same bromides, except with printed signatures - added 8/15/24

JCM 84: c1955 Playing Card & Paper/Scissors/Rock Back

Kawakami (diff #) - added 7/18/24

Kaneda (diff #) - added 7/18/24

JCM Uncatalogued tobacco sized

I think these are all part of the same set. While the backs don't look exactly like each other, they all have the same 3 main elements: large 6 digit number in banner (or math equivalent), large mono-chrome picture of the player, large section with the name in Japanese.
Kozuru - added 7/18/24

Nishizawa - added 7/18/24

Fujimura - added 7/18/24

JCM 173: 1947 Small Blue Batter Back

Oshita (same front as Osawa, but different name) - added 7/15/24

JCM 2: 1948 Blue Baseball Back

This seems to be a variant back (or misprint?) featuring comedians instead of the usual blue baseball back
added 7/15/24

JCM 53: 1956 Yamakatsu Borderless B&W

The two that I have, though, are uncatalogued as of yet. I'm also including below other uncatalogued ones I've found for sale on ebay.
Yasumitsu Toyoda

Yasumitsu Toyoda

Futoshi Nakanishi

Fujimura - added 7/14/24