Advanced Aircraft Weapons Course Graduation Commemorative Watch Fobs/高等科航空兵器術雷爆練習生卒業記念章

1942

Obverse

雷爆 - Navy Air Bomb and Torpedo

reverse

皇紀2602年 - 1942

大東亞戰事之秋 - Great East Asia War, Autumn

第十五期高等科航空兵器術 - 15th Advanced Aircraft Weapons Course

雷爆練習生卒業記念 - Navy Air Bomb and Torpedo Trainee Graduation Commemorative

 

1943

Different details of obverse design.

Watch fob with similar obverse design https://asiamedals.info/threads/tar...on-commemoration-watch-fob.26100/#post-356953

Obverse

高雷爆- Advanced Navy Air Bomb and Torpedo

reverse

皇紀2603年 - 1943


第十八期高等科航空兵器術 - 18th Advanced Aircraft Weapons Course

雷爆練習生卒業記念 - Navy Air Bomb and Torpedo Trainee Graduation Commemorative

Marked 純銀 - pure silver.