HATTORY-SEIKO 9521BrandHATTORY-SEIKOCaliber9521SizeFunctionVersionHandsStemStem (subs.)Stem (2 pce)Balance staffBalance staff (subs.)Mainspring (subs.)Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.4019521Winding stem03548559840354855.9521MAIN PLATE(PLASTIC)01018559840101855.9521CENTER WHEEL BRIDGE01228559840122855.9521TRAIN WHEEL BRIDGE01258559840125855.9521CENTER WHEEL AND PINION02218559840221855.9521FOURTH WHEEL AND PINION02418559840241855.9521Hour wheel02718559840271855.9521Setting lever03838559840383855