Reverse engraved
所澤陸軍飛行學校 - Tokorozawa Army Flight School
第六十二期操縦學生 - 62nd Pilot Class
昭和十二年度 - 1937
明野 - Akeno [Army Flight School]
乙種 - B-Grade /B/"Otsu"/乙 training program, i.e. 6 months fighter pilots training followed by the assignment of an officer rank/
學生 - Student
Marked 純銀 - pure silver.
Original case.
将校用操縦徽章 - Officer's Pilot Badge