ZENTRA 220BrandZENTRACaliber220Size11 1/2FunctionSCVersionHandsStem7016Stem (subs.)Stem (2 pce)Balance staff31801Balance staff (subs.)33102 SSRMainspring (subs.)1,45x10,0x0,125Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.401Winding stem8027016723Balance staff ST -shock-absorber80231801723Balance staff, pivoted80233102