See also badges of the same design https://asiamedals.info/threads/greater-japan-civil-defense-association-saitama-branch-special-merit-badge.26929/ ; https://asiamedals.info/threads/saitama-prefecture-keibodan-badge.24748/
Bakelite.
Width 32 mm.
Obverse
埼 for 埼玉県 - Saitama Prefecture...
civil defense association merit badge
dai nippon keibō kyōkai
dai nippon keibō kyōkai merit badge
greater japan civil defense association badge
greater japan civil defense award badgekeibodanbadgesaitamaprefecturekeibodanbadge
大日本警防協会功労章
大日本警防協会埼玉県支部三等功労章
大日本警防協会章
警防團埼玉縣章
警防團章
Late-war badge made in bakelite. See early metal-made badge of Shinobi police station https://asiamedals.info/threads/greater-japan-civil-defense-association-saitama-branch-special-merit-badge.24959/ and https://asiamedals.info/threads/saitama-prefecture-keibodan-badge.24748/. Another late-war...
Early badge made in metal. Badge class is unidentifiable without original case.
Late-war badges of the same design https://asiamedals.info/threads/greater-japan-civil-defense-association-saitama-branch-special-merit-badge.26929/ ...