See https://asiamedals.info/threads/butoku-kai-award-medal.27961/
Obverse
賞 - Award
reverse
大日本武徳會 - Dai Nippon Butoku Kai
Original case.
金賞牌 - Gold Award Medal
造幣局製 - Made by Mint
butoku kai award gold medal
butoku kai badge
butoku kai watch fob
dai nippon boku kyokai
japanese martial arts association badge
made by osaka mint
martial arts japanese badge
大日本武徳会章
大日本武徳会金賞牌
大日本武徳會章
大日本武徳會金賞牌
武徳会章
造幣局製
金賞牌