OMEGA 1538 Exploded diagram Brand OMEGA Caliber 1538 Size 10 1/2 Function SC-CLD Version Hands 0,70x1,20 Stem 2502 (=255.111) Stem (subs.) Stem (2 pce) Balance staff Balance staff (subs.) Mainspring (subs.) Mainspring (subs.) Battery 373 WatchpartsPart NocaliberdescriptionoriginalArtno.250= 255.461Hour wheel920002502553260Minute wheel401Winding stem8022502