H.B. 81BrandH.B.Caliber81Size6 3/4x8FunctionVersionHands0,60x1,20Stem5902Stem (subs.)Stem (2 pce)Balance staff29104Balance staff (subs.)29309Mainspring (subs.)1,60x7,00x0,08Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.250= 80Hour wheelH1= 1.159410025080260=80Minute wheel9410026080401Winding stem8025902407= 80Clutch wheel9410040780410= 80Winding pignon941004108044080Wippenfeder9410044080445= 80Setting lever jumper combinded9410044580705= 80Escape wheel -pinion straigt piv.9410070580723Balance staff, pivoted80229309723Balance staff ST -shock-absorber80229104