AS 1387BrandASCaliber1387Size13FunctionVersionHands0,80x1,50Stem7215Stem (subs.)Stem (2 pce)Balance staff31204Balance staff (subs.)31502 INCA / 31604 SSRMainspring (subs.)1,7x11,5x0,135Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.401Winding stem8027215723Balance staff, pivoted80231502723Balance staff ST -shock-absorber80231204