UMF 23BrandUMFCaliber23Size10 1/2FunctionVersionHands1,00x1,60Stem8049Stem (subs.)Stem (2 pce)Balance staff39401Balance staff (subs.)Mainspring (subs.)1,70x10,0x0,12Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.401Winding stem8028049723Balance staff ST -shock-absorber80239401