Rare Tianjin (not Wuyi) ST-2 with 18J movement
ST2的極品......"天津 ST-2 "估計係改廠名出嘅特别版
BUXIUGANG HOUGAI = Stainless Steel Case Back
呢個底盖仲好玩, 叫"BUXIUGANG HOUGAI".....不銹鋼後益Seiko, Shanghai, Seagull, Beijing, Wuyi, Zuanshi....and a lot of Chinese vintage watches
