AHS 156 Brand AHS Calibre 156 Size 11 1/2 Function SC Version Hands 0,90x1,50 Stem 7044 Stem (subs.) Stem (2 pce) Balance staff 28725 Balance staff (subs.) Mainspring (subs.) 1,6x9,5x0,11 Mainspring (subs.) Battery WatchpartsPart NocaliberdescriptionoriginalArtno.401Winding stem8027044723Balance staff ST -shock-absorber80228725