LANCO 1721BrandLANCOCaliber1721Size17 1/2FunctionVersionHands1,40x2,05Stem9010Stem (subs.)Stem (2 pce)Balance staff36401Balance staff (subs.)Mainspring (subs.)1,5x16,0x0,20Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.401Winding stem8029010721BBalnace cplt. -for shock-absorber951007211721723Balance staff ST -shock-absorber80236401