Here's a unique and previously-unknown advertising poster for Seiko Gum cards issued in Japan. The poster measures 10x21" and serves as a checklist, with the image used for each card shown, along with the card number and name of the person pictured. Before this poster was discovered, you could only guess if you completed the set. Five Japan Hall of Fame baseball players are depicted on the poster and in the card set: Shigeo Nagashima (Rookie), Masaichi Kaneda, Tetsuharu Kawakami, Yoshio Yoshida and Kenjiro Tamiya. Sumo Yokozuna Wakanohana is also a part of the set. In EX-MT condition.