HATTORY-SEIKO 2K03A Exploded diagram Brand HATTORY-SEIKO Caliber 2K03A Size 5 1/2 Function SC Version Hands Stem 351-291 Stem (subs.) Stem (2 pce) Balance staff Balance staff (subs.) Mainspring (subs.) Mainspring (subs.) Battery 364 Watchparts Part NocaliberdescriptionoriginalArtno.4012K03Winding stem03511759840351175.2K03MAIN PLATE(PLASTIC)01000939840100093.2K03TRAIN WHEEL BRIDGE01251839840125183.2K03SECOND WHEEL PINION02400939840240093.2K03FOURTH WHEEL AND PINION02412959840241295.2K03CENTER MINUTE WHEEL02704729840270472.2K03Hour wheel02712929840271292