IMHOF 249 Brand IMHOF Caliber 249 Size Function Version Hands Stem Stem (subs.) Stem (2 pce) Balance staff 80503 Balance staff (subs.) Mainspring (subs.) 90552 = 4.60x21.0x0.26 GW Mainspring (subs.) 90547 = 2.50x11.0x0.10 WW Battery Watchparts Part NocaliberdescriptionoriginalArtno.200BLarge driving wheell + cannon pinion200/194500200249210BThird wheel94500210249723Balance staff ST -shock-absorber802805037182BAlarm barrel945071822497498BAlarm hammer94507498249