1937 Osaka Air Defense Maneuvers Commemorative Participation Badge/錦防護分団 防空演習参加記念章

Badge with similar design https://asiamedals.info/threads/193...orps-participation-commemorative-badge.25189/

Obverse

護 - Protection

錦防護分團 - Nishiki Air Raid Defense Corps Branch

reverse

昭和十二年度 - 1937

防空演習参加記念章 - Participation in Air Defense Maneuvers Commemorative Badge

 

Same design.
Different air raid defense corps branch and emblem.

Obverse

Emblem of Osaka air raid defense corps https://asiamedals.info/threads/osaka-city-air-raid-defense-corps-badges.23260/

北恩加島防護分 - Kitaokajima protection

reverse

昭和十二年度 - 1937

防空演習参加記念章 - Participation in Air Defense Maneuvers Commemorative Badge