PIAGET 9PBrandPIAGETCaliber9PSizeFunctionVersionHandsStem4604Stem (subs.)= 4512 OMEGA 540Stem (2 pce)Balance staff15901Balance staff (subs.)Mainspring (subs.)0.60x 7.5x0.105 Zgf.-Nr. 2000Mainspring (subs.)(OMEGA 540)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.195Core and ratchet wheel, riveted025998401Winding stem8024604401= OM 540Winding stem8024512407clutch wheel025998430Click spring970004309P443Setting lever assembled540-110996505401109723Balance staff ST -shock-absorber80215901770Mainspring02000