ES 55BrandESCaliber55Size12FunctionVersionHandsStem7066Stem (subs.)7065Stem (2 pce)Balance staff34711Balance staff (subs.)34713Mainspring (subs.)Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.401Winding stem8027066401Aufzugwelle Ersatz8027065410Winding pignon025998434Clicking spring9200043455723Balance staff, pivoted80234713723Balance staff ST -shock-absorber80234711