IWC 854BrandIWCCaliber854Size13FunctionSC-AUTVersionHands0,80x1,40Stem6406Stem (subs.)Stem (2 pce)Balance staff31805Balance staff (subs.)Mainspring (subs.)1.10x10.5x0.12 AUTMainspring (subs.)82026470=EratzBatteryWatchpartsPart NocaliberdescriptionoriginalArtno.180BBarrel with drum + cover94200180C854205BCenter wheel drilled + cannon210BDouble third wheel and pinion94200210854275BSweep second pinion9420275854401Winding stem8026406434= 854Clicking spring8542494200434854443BSetting lever assembled94200443854471BFriction spring f. sweep sec.-pinion94200471C854723Balance staff ST -shock-absorber80231805771BMainspring AUT sliding attachemnet1489BPawel winding wheel8540051491BOscillating weight bolt94201491C8541496BOscillating weight axle