japanese air defense badge

Judging by yellow enameled star this is Keibodan-related badge https://asiamedals.info/forums/keibodan-civil-defense-corps-badges.725/ Obverse 防空 - Air defense 監視 - Surveillance

Specimen from the collection of Raymond LaBar. Photos courtesy of the owner. Obverse 功勞 - Merit reverse 贈呈 - [Presented as a] Gift 昭和拾ー年参月 - March 1936 小石川區防護團 - Koishikawa Ward (Bunkyo, Tokyo) Air Defense Corps This oversized badge has diameter more than 50 mm. Comparative size...

Specimen from the collection of Raymond LaBar. Photos courtesy of the owner. Suspension 参加記念章 - Participation Commemorative Badge Nicely designed badge. reverse 防空演習 - Air Defense Maneuvres 参加記念 - Participation Commemorative 淀橋第五分團 - Yodobashi [ward, one of the 35 former wards of...

Specimen from the collection of Raymond LaBar. Photos courtesy of the owner. Obverse 防空 - Air Defense reverse 昭和十ー年九月 - September 1936 福島県防空大演習 - Fukushima Prefecture Air Defense Large Maneuvers 参加記念章 - Participation Commemorative Badge 平町青年團 - Tairamachi (town located in Meguro-ku...

Specimen from the collection of Raymond LaBar. Photos courtesy of the owner. Obverse 防 - Defense 神田 - Kanda (area in northeastern Chiyoda, Tokyo) 第三分團 - 3rd Branch reverse 参加記念章 - Participation Commemorative Badge 昭和十年七月 - July 1930

Specimen from the collection of Raymond LaBar. Photos courtesy of the owner. Obverse 表彰 - Commendation; Award reverse 昭和十二年度阪神防空演習 - 1937 Hanshin Air Defense Maneuvers 大阪市住吉防護分團 - Osaka City Sumiyoshi Ward Air Defense Corps

Obverse 防空 - Air Defense reverse 第六回関東 - 6th [Region] 防空演習参加章 - Air Defense Maneuvers Participation Badge 業平分團 - Narihira Air Defense Corps Branch 昭和十二年度 - 1937

Length 39.5 mm. Width 29.6 mm. Weight 18 g. Reverse 関東防空大演習 - Kanto Air Defense Maneuvers 日本橋區第一分團 - Nihonbashi Ward [Air Defense Corps] 1st Branch See also merit badge issued by the same branch https://asiamedals.info/threads/osawa-flag-store-tokyo.22329/

Obverse 功勞章 - Merit Badge reverse 足立區防護團 - Adachi Ward Air Defense Corps 第一分團 - 1st Branch

Badge with similar design https://asiamedals.info/threads/air-defense-corps-branch-membership-badge.25027/ Obverse 防空 - Air Defense 團員之章 - [Air Defense Corps] Branch Member Badge reverse 大阪市旭區南城北 - Osaka City, Asahi Ward, Nanjohoku 家庭防空組合員 - Household Air Defense Union Member

Obverse 防空 - Air Defense 報國 - Self-giving Service to Country reverse 昭和十二年防空演習記念 - 1937 Air Defense Maneuvers Commemorative 大宝防護分團 - Taihō Air Defense Corps Branch 畳屋町隊之章 - Tatamiya Town Corps Badge

Badge of the same design for the same Osaka Air Defense Maneuvers but from the different Corps https://asiamedals.info/threads/1937-air-defense-maneuvers-senba-air-defense-corps-participation-commemorative-badge.25019/ Obverse 防空参加記念章 - Air Defense Maneuvers Participation Commemorative...

Reverse 昭和九年七月 - July 1934 近畿防空演習 - Kinki Air Defense Maneuvers 参加記念章 - Participation Commemorative Badge 湊東区防護團 - Higashi-Minato Ward Air Defense Corps 第五分團 - 5th Branch

Badge with similar design https://asiamedals.info/threads/1937-osaka-air-defense-maneuvers-commemorative-participation-badge.23920/ Obverse Osaka City Emblem 田辺防護分團 - Tanabe Air Defense Corps reverse 昭和十一年 - 1936 防空演習参加記念章 - Air Defense Maneuvers Participation Commemorative Badge...

Photos courtesy of the owner. Obverse 毒 - Poison reverse 日本橋区防護團第一分團 - Nihonbashi Ward Air Defense Corps 1st Branch Original pin was lost.

Obverse 國威宣楊 - To Propagate National Prestige 第二分團 - 2nd Branch [of Air Raid Defense Corps] reverse 日支事変之際 - On the Occasion of the China Incident 記念 - Commemorative 昭和十二年九月 - September 1937 関東防空演習 - Kanto [Region] Air Defense Maneuvers 日本橋区防護團 - Nihonbashi Ward Air Defense Corps...

Obverse 防空演習 - Air Defense Maneuvers 記念 - Commemorative reverse 昭和十二年度阪神防空演習 - 1937 Hanshin Air Defense Maneuvers 濟美(=済美)防護分團 - Saibi Air Defense Corps Branch

See also https://asiamedals.info/threads/1933-kanto-air-defense-maneuvers-yotsuya-ward-air-defense-corps-commemorative-badge.24784/ ; https://asiamedals.info/threads/1936-yotsuya-ward-air-defense-corps-sanko-town-branch-badge.26406/ Obverse 第一分團 - 1st Branch [of Air Raid Defense Corps] 防...

Obverse 防空 - Air Defense reverse 昭和十一年度 - 1936 防空演習記念 - Air Defense Maneuvers Commemorative 金港第一分團 - Kinkō 1st Branch of Air Raid Defense Corps

Badge with similar design https://asiamedals.info/threads/1937-air-defense-maneuvers-kobe-ward-air-defense-corps-yamate-branch-participation-commemorative-badge.25026/ Obverse 防空演習参加記念 - Air Defense Maneuvers Participation Commemorative reverse 兵庫区防護團 - Hyogo Ward Air Raid Defense Corps...