1937 Air Defense Maneuvers Senba Air Defense Corps Participation Commemorative Badge/昭和十二年七月船場防護分団防空参加記念章

Badge of the same design for the same Osaka Air Defense Maneuvers but for the different Corps https://asiamedals.info/threads/193...orps-participation-commemorative-badge.25191/

Size 32 x 40 mm.
Weight 16.3 g.

Obverse

防空参加記念章 - Air Defense Maneuvers Participation Commemorative Badge

reverse

昭和十二年七月 - July 1937

船場防護分團 - Senba Air Defense Corps Branch

 

Another example.