JCM 131b: 1958 Color 6 Digit Animal Back Type 2

Nagashima - hand in back pocket

Inao

Kaneda (the guide has him listed as #23...)

Iida

#18 Isaki

Izaki - added 7/14/24

Oshita(?) with trophy - added 7/14/24

Nagashima - added 7/25/24

Nagashima end of swing - added 8/29/24

JRM 6: 1949 Flying Menko

Starffin - added 8/25/24

Tiba - added 8/25/24

Fujimoto - added 8/25/24

Kawasaki - added 8/25/24

JCM 43e: 1960 Marusan Simple Back Black & White Menko

Aida(UNC)

Sadaharu Oh - added 8/25/24

JMC 40: 1978 NST Yomiuri Giants

These were listed as unknown in the guide - added 8/21/24

JCM 14d: 1961 Bat on Right

Yamauchi - added 8/16/24

JCM 32c: 1959 Marumatsu Scoreboard Back

Dobashi - added 8/15/24

Kamijou - added 8/15/24

JRM : Uncatalogued Set

Miyake - added 6/9/24

Fujimoto - added 6/9/24

Ohira - added 6/9/24

Sumoto - added 6/9/24

Bando - added 8/15/24

Masuda - added 8/15/24

JCM 164: 1957 Orange Ink Back B&W Front

Namiki(UNC)

Hakoda - added 8/15/24

Sasaki - added 8/15/24

JCM 67: 1958 Maruo Military and Space Backs

ono - added 8/15/24

JCM 43b: 1957 Marusan Simple Back Borderless, Color Front, Manufactuer's Symbol on Back

Koyama - added 7/14/24

Futoshi - added 8/15/24

JCM 38 ???: c. 1959 Marusho Two Bat Back

This set looks like JCM38b, but the text is arranged like JCM38a !!!
Fujimoto

Ozawa

Fujita

Toyoda

Machida - added 5/14/24

Harada - added 5/14/24

Yasuhara - added 5/14/24

Nomura - added 5/14/24

Hasagewa - added 5/14/24

Kaneda - added 5/25/24

Kondo - added 6/22/24

Ono - added 8/15/24

Nakata - added 8/15/24

JDM 16: 1948 Vertical Text Team Back

4198+12 Winner? - added 8/15/24

JRM 49: 1949 Name in Rectangular Box

12082 Matsuura ? - added 8/15/24

JRM 27: 1949 Team Name Back

JRM 27: 1949 Team Name Back has at leat 23 cards, 1 3/4" in diameter. These actually have a unique backside, featuring a baseball team name and a unique menko number. I've included one here that is uncatalogued.

Oshita w/ diff number - added 8/15/24

I've also found that most of the set has a variant font on the numbers on the back side: added 8/15/24