Osawa Flag Store, Tokyo/大澤旗店

Another Flag Store (see https://asiamedals.info/threads/badges-of-sasaki-flag-store-okayama.21870/ and https://asiamedals.info/threads/badges-made-by-tanaka-flag-store-osaka.22899/) that was engaged in manufacturing badges.

大澤旗店謹製 - made by Osawa Flag Store

Air defense badge.

Obverse

功労章 - Merit Badge

Reverse

日本橋区防護団 - Nihonbashi Ward Air Raid Defense Corps

第一分団 - 1st Branch

Original case.

Inside.