Masaaki Koyama pitched 21 years in Japan Pro Baseball, compiling 320 lifetime wins. He is third in career victories behind Masaichi Kaneda and Tetsuya Yoneda. On this baseball, he inscribed "Meikyukai" (Golden Players Club)
in Japanese to the right of his signature, and added 320 wins on the sweet spot. He was inducted into the Hall of Fame in 2001.
Size: Regular sized baseball.
Condition: Signature 10 of 10.
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