B.F.G. 134BrandB.F.G.Caliber134Size10 1/2FunctionVersionHandsStem8701Stem (subs.)Stem (2 pce)Balance staff39503Balance staff (subs.)40602 / 40603Mainspring (subs.)Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.401Winding stem8028701723Balance staff, pivoted80240602723Balance staff ST -shock-absorber80239503