1987 Konami Chara Exciting Basket
Country of origin: Japan
Size: 2-1/8" x 3-3/8"
Exciting Basket was the Japanese version of the early basketball video game Double Dribble, which was released on Nintendo NES. The floppy-disc based game does not feature the official basketball teams or player names, rather you select Boston, New York, Chicago, or Los Angeles. The game comes with one of six total character cards.
Additional resources: Wiki on the game