ZENITH 2530 Brand ZENITH Caliber 2530 Size 11 1/2 Function o. SC Version Hands 0,80x1,30 Stem 6033 Stem (subs.) Stem (2 pce) Balance staff 28813 Balance staff (subs.) Mainspring (subs.) 1.20x10.0x0.10 Mainspring (subs.) = 2531 Battery WatchpartsPart NocaliberdescriptionoriginalArtno.180BBarrel cpl (hand)995001802573401Winding stem8026033407= 2572PCClutch wheel995004072572435= 2572PCYoke spring995004352572435B = 2572pcYoke spring995004352530445= 2572PCSetting lever spring9950044525727022531Escape wheel -pinion 2 end-piec.995007022531710= 2531Pallet fork -pinion 1 lower end-piec.995007102531721= 2552PCBalance cplt. -regulated995007212552723Balance staff ST -shock-absorber80228813770= 2531Mainspring995007702531