See also https://asiamedals.info/threads/1933-kanto-large-air-defense-maneuvers-koishikawa-ward-air-defense-corps-participation-commemorative-badge.25039/
Size 34.5 x 30.5 mm.
Thickness 2.6 mm.
Obverse
關東防空大演習記念 - Kanto Large Air Defense Maneuvers
参加章 - Participation Badge
reverse...
1933 kanto large air defense maneuvers watch fob
japanese air defense badge
japanese air defense corps badge
japanese air defense maneuvers badge
takinogawa ward air defense corps badge
takinogawa ward air defense corps watch fob
瀧野川區防護團關東防空大演習参加メダル
瀧野川區防護團關東防空大演習参加章
関東防空演習参加メダル
關東防空大演習参加章