Badge of similar design https://asiamedals.info/threads/tank-units-commemorative-badges-and-watch-fobs.23221/#post-346992
Windth 33.9 mm.
Reverse
優秀章 - Excellence Badge
japanese army tank crew excellence award badge
japanese army tank crew excellence award watch fob
japanese army tank crew excellence badge
japanese army tank crew excellence watch fob
japanese imperial army watch fob
japanese tank award badge
japanese tank award watch fob
japanese tank badge
japanese tank watch fob
優秀章
大日本帝国陸軍戦車兵優秀章
陸軍戦車兵優秀章
