HATTORY-SEIKO 6423A Exploded diagram BrandHATTORY-SEIKOCaliber6423ASizeFunctionSC-DD(3)VersionHandsStem354-640Stem (subs.)354-641Stem (2 pce)Balance staffBalance staff (subs.)Mainspring (subs.)Mainspring (subs.)BatteryMovementsArtno.brandcaliberSizehandsfunctionspecialHATTORY-SEIKO6423ASC-DD(3) WatchpartsPart NocaliberdescriptionoriginalArtno.250Hour wheel271-64198402716414016423AHandsetting stem354-64098403546404060Coil -red4002-640 (-642025998