HATTORY-SEIKO 6423A Exploded diagram Brand HATTORY-SEIKO Caliber 6423A Size Function SC-DD(3) Version Hands Stem 354-640 Stem (subs.) 354-641 Stem (2 pce) Balance staff Balance staff (subs.) Mainspring (subs.) Mainspring (subs.) Battery MovementsArtno.brandcaliberSizehandsfunctionspecialHATTORY-SEIKO6423ASC-DD(3) Watchparts Part NocaliberdescriptionoriginalArtno.250Hour wheel271-64198402716414016423AHandsetting stem354-64098403546404060Coil -red4002-640 (-642025998