Reverse
日本郵船株式会社 - Nippon Yusen Kaisha, Ltd./NYK Line Co., Ltd./Nippon Yusen /largest Japanese shipping company, it is part of the Mitsubishi Group/.
大阪支店新館記念 - Osaka Branch New Building Completion Commemorative
大正八年弐月 - February 1919
Marked 尚美堂/Shobido https://asiamedals.info/threads/history-and-badges-of-shobido-workshop.19514.
Original case.
記念 - Commemorative