ZENITH 2531BrandZENITHCaliber2531Size11 1/2FunctionKlSVersionHands0,80x1,30Stem6033Stem (subs.)Stem (2 pce)Balance staff28813Balance staff (subs.)Mainspring (subs.)1.20x10.0x0.10Mainspring (subs.)EigenBatteryWatchpartsPart NocaliberdescriptionoriginalArtno.180= 2530Barrel with drum + cover995001802573200= 2541Center wheel + cannon pinion995002002541224BSecond wheel -long lower pivot995002242531358BRegulator corrector995003582531401Winding stem8026033445= 2572 PCSetting lever spring995004452572702BEscape wheel -pinion 2 end-piec.995007022531710BPallet fork -pinion 1 lower end-piec.995007102531721= 2552PCBalance cplt. -regulated995007212552723Balance staff ST -shock-absorber80228813770BMainspring995007702531