OMEGA 520BrandOMEGACaliber520SizeFunctionSCVersionHands0,80x1,50Stem6022Stem (subs.)Stem (2 pce)Balance staff28406 INCABalance staff (subs.)Mainspring (subs.)510-1208Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.211= 470Double third wheel and pinion470-124096504701240245Cannon pignon sweep sec. H = 270520-121896505201218401Winding stem8026022407470clutch wheel470-110796504701107410470Winding pignon470-110896504701108723Balance staff ST -shock-absorber80228406770Mainspring510-120896505101208