STANDARD 1786 Brand STANDARD Caliber 1786 Size 10 1/2 Function SC Version Hands 0,85x1,30 Stem 7433 Stem (subs.) Stem (2 pce) Balance staff 29517 Balance staff (subs.) Mainspring (subs.) 1,6x9,0x0,10 Mainspring (subs.) Battery WatchpartsPart NocaliberdescriptionoriginalArtno.401Winding stem8027433445= 1686Setting lever spring920004451686723Balance staff ST -shock-absorber80229517