1933 Kanto Large Air Defense Maneuvers Aoki Union Participation Badge/昭和八年八月 關東防空大演習参加記青木聯合會章

See also another badge with similar design https://asiamedals.info/threads/193...s-officer-preparatory-training-badge-a.27535/

Specimen from the collection of Raymond LaBar. Photos courtesy of the owner.

Reverse

關東防空大演習参加記青木聯合會 - Kanto Large Air Defense Maneuvers Participation Badge Aoki [Air Defense] Union

昭和八年八月 - August 1933


Original case,

記念 - Commemorative

青木聯合會 - Aoki Union

Badges were manufactured by Naigai Medal Works.