OMEGA 503 Brand OMEGA Caliber 503 Size Function SC-CLD-AUT Version Hands 0,80x1,50 Stem 5810 Stem (subs.) Stem (2 pce) Balance staff 28406 INCA Balance staff (subs.) Mainspring (subs.) Spez. 470-1208 Mainspring (subs.) = 820 2922 0 Battery Watchparts Part NocaliberdescriptionoriginalArtno.211= 470Double third wheel and pinion470-124096504701240255= 502Hour wheel sweep sec.502-123196505021231275= 502Sweep second pinion502-125096505021250401= 500Winding stem500-11068025810420= 550Crown wheel470-110196505501101425= 330Clicking spring330-110496503301104443= 500Setting lever assembled500-110996505001109445= 330Setting lever spring330-111096503301110721= 490Balnace cplt. -for shock-absorber490-132796504901327723Balance staff ST -shock-absorber80228406771Mainspring AUT sliding attachemnet470-1208820292201481= 470Reduction wheel AUT470.1432965047014321482= 470Ratchet wheel driving wheel470-1437965047014371496= 470Oscillating weight axle470-1400965047014002557502date indicator502-1500965050215002575= 502Date jumper spring502-150396505021503