Badges were manufactured by two workshops: Oki Medal Company in Tokyo https://asiamedals.info/threads/badges-and-watch-fobs-made-by-oki-medal-company.23339/ and Sapporo Medal Company https://asiamedals.info/threads/badges-and-watch-fobs-made-by-sapporo-medal-company-medaru.26817/ Type 1 China...
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