See also https://asiamedals.info/threads/japanese-non-commissioned-officers-pilot-badge-with-two-hallmarks.26855/
Silver, gilt, enamel.
Size 51.7 × 37.2 mm.
Marked
純銀 - pure silver
純金張 - pure gold plated
Punched with "3".
S
japanesearmypilotbadgejapanesearmypilotbadgeinsilverjapanesepilotbadgejapanesepilotbadge made insilverjapanesepilotbadge with two hallmarks
marked japanesepilotbadge
陸軍飛行機操縦徽章
陸軍飛行機操縦徽章純銀製
Pilot badge in silver.
Reverse engraved
第七十二期 - 72nd Class
一木 - Ichiki
Marked 純銀 - pure silver.
Original case.
下士官用操縦徽章 - Non-commissioned Officer's Pilot Badge
The Tachiarai Army Flight School opened in 1940 and trained many pilots who took part in kamikaze operations in the last year of the war. The Tachiarai Flight School had a branch school in Chiran (Kagoshima Prefecture), where many Army pilots departed to make suicide attacks on the American...