Badge of similar design https://asiamedals.info/threads/1936-three-city-union-air-defense-maneuvers-participation-badge.25016/
Size 30 mm.
Weight 12 g.
Obverse
防空 - Air Defense
reverse
昭和十一年七月 - July 1936
第五回防空演習参加章 - 5th Air Defense Maneuvers Participation Badge
業平分團 - Narihira Branch...
air defense
air defense maneuvers badge
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narihira branch 5th air defense maneuvers badge
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