The JCM 31c Type 1 cards differ in style from Type 2 in that the Marukami manufacturer's symbol appears on the Type 1 cards only. The card of Sadaharu Oh features a cartoon on the back below the Yomiuri Giants team flag.

Size: 1 13/16" x 3"

Condition: Good. Hand cut. The extra paper and glue residue found on the back is the result having originally been issued as part of a second prize winner four card panel on a display sheet. The four cards were then most likely cut into single cards many decades ago by a previous owner.