昭和十一年度向島区防護団防空演習参加章

See also https://asiamedals.info/threads/1937-mukojima-ward-air-raid-defense-corps-2nd-terashima-branch-diligent-service-badge.29131/ ; https://asiamedals.info/threads/1935-air-defense-maneuvers-mukojima-ward-air-raid-defense-corps-participation-badge.29130/. Size 30 x 20 mm. Obverse Tokyo...