This is a very rare baseball card game that was included as a purchase bonus (novelty item) with the Showa-retro "Jintan Thermometer." 【Product Highlights】 2-WAY Specification: It functions both as a game card for enjoying baseball games and as a regular deck of playing cards. Complete Set (Complete Condition): Confirmed to have all the cards. Retro Design: Each card features dynamic baseball illustrations from the Showa era, making them valuable for viewing. Back Design: The design, unique to the time, features a batter illustration on a green background with the "Base Ball Game with TRUMP" logo. 【How to Play】 Flip over the cards and follow the instructions written on them (hit, out, home run, etc.) to play the game according to baseball rules. You can play with 2 people, or even alone or with multiple people. 【Condition】 As this is an old item from several decades ago, the outer box has some wear and tear due to aging, but the cards inside are in relatively good condition. We will sell this to those who understand it as a vintage or antique item.