ZENITH 2541 Brand ZENITH Caliber 2541 Size 11 1/2 Function 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.180= 2530Barrel with drum + cover995001802573200BCenter wheel + cannon pinion995002002541224= 2531Second wheel -long lower pivot995002242531240BCannon pinion995002402541401Winding stem8026033410BWinding pignon995004102541705BEscape wheel -pinion straigt piv.995007052541710= 2531Pallet fork -pinion 1 lower end-piec.995007102531721= 2552PCBalance cplt. -regulated995007212552723Balance staff ST -shock-absorber80228813770= 2531Mainspring995007702531