FHF 4146 Brand FHF Caliber 4146 Size 18 1/2 Function Version Hands 0,95x1,90 Stem 9805 Stem (subs.) Stem (2 pce) Balance staff 37403 Balance staff (subs.) 37704 INCA Mainspring (subs.) 1,7x16,0x0,19 Mainspring (subs.) Battery WatchpartsPart NocaliberdescriptionoriginalArtno.401Winding stem8029805723Balance staff ST -shock-absorber80237403723Balance staff, pivoted80237704770BMainspring920007704146