LONGINES 21.54BrandLONGINESCaliber21.54SizeFunctionVersionHandsStemStem (subs.)Stem (2 pce)Balance staffDCN 191Balance staff (subs.)Mainspring (subs.)Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.723BBalance staff ST -shock-absorber95407239