Obverse
Uchibi. /内火 - literally means "internal fire" or "internal combustion"/
reverse
海軍工機學校 - Naval Engineering School
昭和十二年度 - 1937
第二回 - 2nd
高等科 - Advanced Course
内火機械術 - Internal Combustion Engine Technology
練習生卒業記念 - Trainee Graduation Commemorative