AS 1551BrandASCaliber1551Size11 1/2FunctionSCVersionHands0,90x1,50Stem7431Stem (subs.)Stem (2 pce)Balance staff28315Balance staff (subs.)29115 INCAMainspring (subs.)1,4x9,5x0,10Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.401Winding stem8027431723Balance staff, pivoted80229115723Balance staff ST -shock-absorber80228315