AM 397FabrikatAMKaliber397size12functionversionhands0,90x1,50stem7014stem (subs.)stem (2 pce)balance staff30706balance staff (subs.)31008 INCAmainspring (subs.)1,7x10,5x0,12mainspring (subs.)batteryWatchpartsPart NocaliberdescriptionoriginalArtno.401Winding stem8027014723Balance staff ST -shock-absorber80230706723Balance staff, pivoted80231008