Sea and Sky Association Meritorious Member's Badge/海と空の会有功会員章

Greater Japan Aviation Women's Association badge of similar design https://asiamedals.info/threads/gre...ssociation-local-regular-members-badge.26897/

Size 26×18 mm.
Weight 4.27 g.

Reverse

有功會員章 - Meritorious Member's Badge

海と空の會 - Sea and Sky Association