UNITAS 473BrandUNITASCaliber473Size18 1/2x21FunctionVersionHands1,15x2,00Stem12003Stem (subs.)Stem (2 pce)Balance staff40503Balance staff (subs.)40704 INCA / 41501 SSRMainspring (subs.)2,0x16,5x0,20Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.401Winding stem80212003723Balance staff ST -shock-absorber80240503723Balance staff, pivoted80240704