Nakajima Aircraft Company Koizumi Plant Industrial Patriotic Service Association Award Badge/中島飛行機小泉産業報国会表彰章
See also https://asiamedals.info/threads/nakajima-aircraft-company-badges-hat-badges-and-other-artifacts.19087/ Obverse 表彰 - Commendation reverse 中島飛行機 - Nakajima Aircraft [Company] 小泉 - Koizumi [Plant] 産業報國會 - Industrial Patriotic Service Association
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