OMEGA 490BrandOMEGACaliber490SizeFunctionAUTVersionHands0,80x1,50Stem5810Stem (subs.)Stem (2 pce)Balance staff28406 INCABalance staff (subs.)Mainspring (subs.)Spez.Mainspring (subs.)2922xBatteryWatchpartsPart NocaliberdescriptionoriginalArtno.200BLarge driving wheell + cannon pinion490-122496504901224227Sweep second wheel490-124396504901243260= 470Minute wheel470-124696504701246401= 500Winding stem500-11068025810415= 470Ratchet wheel470-110096504701100420= 550Crown wheel470-110196505501101445Setting lever spring330-111096503301110705BEscape wheel -pinion straigt piv.490-130596504901305721BBalnace cplt. -for shock-absorber490-132796504901327723Balance staff ST -shock-absorber802284061496= 470Oscillating weight axle470-1400196504701400