陸軍航空整備学校第十八面乙種生章

See also https://asiamedals.info/threads/1941-army-aviation-maintenance-school-18th-b-class-yokaren-program-graduation-watch-fob-2601.27127/ Obverse 航 for 航整 - Aircraft Maintenance 電 for 電気 - Electrical Equipment reverse 卒業記念 - Graduation Commemorative 陸軍航空整備學校 - Army Aviation...