A.V. 427 Brand A.V. Caliber 427 Size 10 1/2 Function Version Hands 0,70x1,30 Stem 6025 Stem (subs.) Stem (2 pce) Balance staff 22301 Balance staff (subs.) 23802 INCA Mainspring (subs.) 1,1x9,0x0,10 Mainspring (subs.) Battery WatchpartsPart NocaliberdescriptionoriginalArtno.401Winding stem8026025445= 423Setting lever spring92000445423721= 423Balnace cplt. -for shock-absorber92000721423721= 423Balnace cplt. -for shock-absorber920007214231723Balance staff ST -shock-absorber80222301723Balance staff, pivoted80223802