JCM 114: 1949 Seals Tour Alphabet Back

Aota - added 2/9/26

JBR Orange border - Uncatalogued

UNC stripe

Kozuru - added 11/13/25

Kawakami - added 1/10/26

Kageymama and Aramaki - added 1/10/26

Starffin - added 2/2/26

JCM unc - Seals Tour Silhouette

Lodigiani - added 1/24/26

Melton - added 1/24/26

JCM 216: c1949 Cursive Team Name

Yamamoto - added 11/14/25

Kotori? - added 1/10/26

Starffin - added 1/24/26

JCM uncatalogued- blue batter

Al Lien - added 3/27/25

Iida - added 3/27/25

Kajioka - added 10/13/25

Shields - added 1/24/26

JCM 64: 1950 Who Am I?

1345x71 Fujimoto - added 10/4/24

Then I found a 2nd set, it looks identical to JCM64, but is differentiated by the fact that the fronts have cruder drawings, and the back math equations are in a thicker/bold font. The following cards belong to this other set.
251x7 Nishizawa - added 7/14/24

Lefty O'Doul - added 10/11/24

Victor Starffin - added 1/13/25

Brocker (appears to be a cruder drawing set variant of JCM64) - added 1/24/26