AS 1639BrandASCaliber1639Size6 3/4x8FunctionAUTVersionHands0,60x1,20Stem5403Stem (subs.)Stem (2 pce)Balance staff26003Balance staff (subs.)26704 INCAMainspring (subs.)1,5x6,0x0,06Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.401Winding stem8025403723Balance staff, pivoted80226704723Balance staff ST -shock-absorber80226003771BMainspring AUT sliding attachemnet920007711639