AS 1657 Brand AS Calibre 1657 Size 7 Function SC-AUT Version Hands 0,75x1,20 Stem 5529 Stem (subs.) Stem (2 pce) Balance staff 23601 Balance staff (subs.) 25601 INCA Mainspring (subs.) 1,3x6,0x0,06 Mainspring (subs.) Battery WatchpartsPart NocaliberdescriptionoriginalArtno.401Winding stem8025529723Balance staff ST -shock-absorber80223601723Balance staff, pivoted80225601