H.B. 90 Brand H.B. Caliber 90 Size 6 3/4x8 Function o.SC Version Hands 0,60x1,20 Stem 5902 Stem (subs.) Stem (2 pce) Balance staff 29104 Balance staff (subs.) 29309 Mainspring (subs.) 1,60x7,00x0,08 Mainspring (subs.) = 4050 Battery Watchparts Part NocaliberdescriptionoriginalArtno.250= 80Hour wheelH1= 1.159410025080401Winding stem8025902443= 80Setting lever assembled9410044380445= 80Setting lever spring9410044580705= 80Escape wheel -pinion straigt piv.9410070580705= 80Escape wheel -pinion straigt piv.9410070580723Balance staff ST -shock-absorber80229104723Balance staff, pivoted80229309