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...
1933kantolargeairdefensemaneuverswatchfob
japanese airdefense badge
japanese airdefense corps badge
japanese airdefensemaneuvers badge
takinogawa ward airdefense corps badge
takinogawa ward airdefense corps watchfob
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