Badge with a similar design https://asiamedals.info/threads/1933-kanto-air-defense-maneuvers-shitaya-ward-air-raid-defense-corps-commemorative-badge.24805/
Badge in mint condition.
Obverse
帝都 - Imperial Capital (i.e. Tokyo)
防護 - Air Raid Defense/Protection
Well-worn specimens.
airdefense maneuvers badges
imperial capital air raid defensebadge
imperial japan airdefensebadge
imperial japan airdefensebadges
japaneseairdefensebadgejapanesebadge
tokyo airdefensebadge
帝都防護章
Badge size varies between 18 and 20 mm.
"Early" badges.
1st variation.
Reverse
賛助員會章 - Supporting Member of Association Badge
財團法人 - Foundation
大日本防空協會 - Dainippon Air Defense Association
Hot enamel + light metal alloy.
Original case.
Size 55 x 45 mm.
Another example of 1st...
dainippon airdefense association
dainippon airdefense association badge
great japan airdefense association
great japan airdefense association badge
greater japan airdefense association badgejapaneseairdefense association badgejapaneseairdefensebadgejapaneseairdefense maneuvers badge
supporting member badge
大日本防空協会
大日本防空協会徽章
賛助会員章
The badge has the same design as special member badge https://asiamedals.info/threads/special-member-badge.23257/
Only suspension has reverse color scheme and reverse insciptions are different.
Suspension of regular member badge.
Suspension of special member badge.
Early "heavy" badges...
dainippon airdefense association
full member badge
great japan airdefense association
japaneseairdefensebadge
regular member badge
大日本防空協会
大日本防空協会正会員章
大日本防空協会章
正会員章
great japan airdefense association
greater japan airdefense association badgejapaneseairdefense association badgejapaneseairdefensebadgejapaneseairdefense school badge
osaka airdefense school
osaka airdefense school badge
大阪防空学校
大阪防空学校章
This design was used for badges issued by Shitaya Ward to participants of air defense maneuvers in Kanto area during 1930s.
In 1936 badge with similar design was commissioned by Arakawa Ward Air Raid Defense Corps...