GRUEN 410BrandGRUENCaliber410Size10 1/2FunctionVersionHands0,65x1,20Stem5912Stem (subs.)Stem (2 pce)Balance staff30007Balance staff (subs.)Mainspring (subs.)1,2x9,0x0,105Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.401Winding stem8025912410BWinding pinion with square hole= Le Coultre 46394400410463723Balance staff ST -shock-absorber80230007