IWC 3254 Brand IWC Caliber 3254 Size Function Version Hands Stem = 3254 (eigen) Stem (subs.) 9420 0401 3254 Stem (2 pce) Balance staff Balance staff (subs.) Mainspring (subs.) Spezial Mainspring (subs.) Battery WatchpartsPart NocaliberdescriptionoriginalArtno.401BWinding stem942004013254410BWinding pignon942004103254435BYoke spring942004353254440BYoke spring942004403254443BSetting lever942004433254450BSetting wheel942004503254710BPallet fork -pinion 1 lower end-piec.942007103254770BMainspring t-hook942007703254