This is the first time that we have ever had the pleasure to offer these rare, giant sized cards. The cards were originally an insert in the February 1978 issue of Boken Oh (Adventure King) magazine. The set has a designation of R4 in the Japanese Baseball Card Checklist & Price Guide, Vintage Edition, meaning that 10 or fewer examples of these cards are known in the hobby. Hall of Famers (top to bottom) Sadaharu Oh, Shigeo Nagashima and Isao Harimoto are depicted in the set, with a fourth card containing facsimile autographs of all three. According to the instructions, the side extensions were to be used to construct "panel racks" (whatever they are). Blank backed.
Size: Each card is 8" x 3 7/8".
Condition: All cards are Near Mint or better.