石數/# of jewels................ ....10J
生產年份/Production date.... 1925~35
口徑/diameter......................28mm
入手難易度/Rarity................★★★★☆
備註/Remarks......................軍表 / Military watch
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Seiko, Shanghai, Seagull, Beijing, Wuyi, Zuanshi....and a lot of Chinese vintage watches