HATTORY-SEIKO 9520 Brand HATTORY-SEIKO Caliber 9520 Size Function Version Hands Stem Stem (subs.) Stem (2 pce) Balance staff Balance staff (subs.) Mainspring (subs.) Mainspring (subs.) Battery Watchparts Part NocaliberdescriptionoriginalArtno.4019520Winding stem03548559840354855.9520MAIN PLATE(PLASTIC)01018559840101855.9520CENTER WHEEL BRIDGE01228559840122855.9520TRAIN WHEEL BRIDGE01258559840125855.9520CENTER WHEEL AND PINION02218519840221851.9520CENTER WHEEL AND PINION02218529840221852.9520FOURTH WHEEL AND PINION02418519840241851.9520Hour wheel02718559840271855.9520Hour wheel02718569840271856.9520Setting lever03838559840383855