About flight https://asiamedals.info/threads/1925-first-japan-europe-flight-commemorative-watch-fob.29643/#post-370006. Size 60 mm. Thickness 6 mm. Weight 131 g. Obverse 訪歐大飛行成功記念 大正十四年- 1925 Successful Flight to Europe Commemorative 朝日新聞社 - Asahi Shimbun...