See also badge issued by Ibaraki Prefecture Keibodan Branch https://asiamedals.info/threads/1943-greater-japan-civil-defense-association-ibaraki-branch-imperial-review-commemorative-badge.27225/
Size 35 x 28 mm.
Reverse
御視閲記念 - Imperial Review Commemorative
茨城縣支部 - Ibaraki Branch...