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

Koyama - added 7/14/24

Futoshi - added 8/15/24

Koyama - added 12/7/24

Sugiyama - added 4/5/25

Takakura - added 4/22/25

Sasaki - added 4/22/25

Ezaki - added 4/22/25