IWC 8541 Brand IWC Caliber 8541 Size 13 Function Version Hands 0,80x1,40 Stem 6406 Stem (subs.) Stem (2 pce) Balance staff 29808 Balance staff (subs.) Mainspring (subs.) 1.10x10.5x0.12 AUT Mainspring (subs.) 820 2653 1 Battery Watchparts Part NocaliberdescriptionoriginalArtno.205= 854Center wheel drilled + cannon94200205C854401Winding stem8026406434= 854Clicking spring8542494200434854443= 854Setting lever assembled94200443854721BBalnace cplt. -for shock-absorber942007218541723Balance staff ST -shock-absorber80229808771= 854Mainspring AUT sliding attachemnet820265311489= 854Pawel winding wheel85400594201489854