ETERNA 1020BrandETERNACaliber1020Size11 1/2FunctionVersionHands0,80x1,40Stem7230Stem (subs.)Stem (2 pce)Balance staff28613Balance staff (subs.)27608Mainspring (subs.)1,55x8,5x0,09Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.401Winding stem8027230430BClick spring920004301020723Balance staff, pivoted80227608723Balance staff ST -shock-absorber80228613