UNITAS 477BrandUNITASCaliber477Size18 1/2x21FunctionVersionHands1,15x2,00Stem12003Stem (subs.)Stem (2 pce)Balance staff46507Balance staff (subs.)47003 INCA / 47201 SSRMainspring (subs.)2,0x16,5x0,20Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.401Winding stem80212003723Balance staff ST -shock-absorber80246507723Balance staff, pivoted80247003