B.F.G. 58BrandB.F.G.Caliber58Size12 1/2FunctionSCVersionHands1,10x1,60Stem8303Stem (subs.)Stem (2 pce)Balance staff29812Balance staff (subs.)29813Mainspring (subs.)1,25x10,5x0,125Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.401Winding stem8028303723Balance staff, pivoted80229813723Balance staff ST -shock-absorber80229812