CORTEBERT 661BrandCORTEBERTCaliber661SizeFunctionVersionHandsStemStem (subs.)Stem (2 pce)Balance staffBalance staff (subs.)Mainspring (subs.)Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.407= 571Clutch wheel92000407571410= 571Aufzugrad92000410571