ETA 255.421 Exploded diagram BrandETACaliber255.421Size10 1/2FunctionSC-DD(3)VersionHands0.70x1.20x02.0Stem2502 (=255.111)Stem (subs.)Stem (2 pce)Balance staffBalance staff (subs.)Mainspring (subs.)Mainspring (subs.)Battery373MovementsArtno.brandcaliberSizehandsfunctionspecial166001ETA255.42110 1/20.70x1.20x0.20SC-DD(3) WatchpartsPart NocaliberdescriptionoriginalArtno.100BMain plate jewelled920001002554110255.111Barrel and train wheel bridge920001102551144255.111Dial fastener920001442551145BDial fastener920001452554147950.001Mark support920001479500161255.121Center pipe920001612551172255.411Stud for minute wheel920001722554203255.111third wheel920002032551210255.111Third wheel920002102551227255.111Sweep second wheel920002272551242255.111Cannon pinion with driver920002422551250255.121Hour wheel920002502551260255.111Minute wheel920002602551401Winding stem8022502405255.411Winding stem -mouv.part920004052554407255.111Clutch wheel920004072551435255.111Yoke spring920004352551443255.111Setting lever assembled920004432551445255.111Setting lever spring920004452551450255.111Setting wheel920004502551462255.111Minute train bridge920004622551466255.111Setting mechanism cover920004662551479255.111Pressure spring for setting lever920004792551560255.1119200056025512521255.1219200252125512543255.111Intermediate date wheel9200254325512555255.121Calender driving wheel9200255525512557Bdate indicator9200255725542561BDay indicator at 3 o´clock9200256125542569255.121Double corrector9200256925512575255.111Date jumper spring9200257525512576255.111Date jumper9200257625512577255.121Day jumper9200257725512595255.111Date jumber maintaining plate9200259525512663255.121Halteplatte für Tagesanzeige9200266325512743255.111Date corrector setting wheel9200274325512780255.121Day indicator spring-clip9200278025514000255.111Electronic module9200400025514003B9200400325544021955.101Stator9200402195514038255.1119200403825514046255.111Battery insulator, bottom9200404625514160255.111Wire springs for alarm buzzer9200416025514211255.111Rotor9200421125514407955.101Earth connector (+)9200440795514412955:10192004412955:4929255.111Battery9200492925519716255.111Corrector spring920097162551