UDSSR-CHAIKA 1601 Brand UDSSR-CHAIKA Caliber 1601 Size 7 Function Version Hands 0.45x1.00 Stem 6526 Stem (subs.) Stem (2 pce) Balance staff 31024 Balance staff (subs.) Mainspring (subs.) 1,30x6,00x0,75 Mainspring (subs.) Battery MovementsArtno.brandcaliberSizehandsfunctionspecial152031UDSSR-CHAIKA160170.45x1.00 WatchpartsPart NocaliberdescriptionoriginalArtno.401Winding stem8026526723Balance staff ST -shock-absorber80231024770Mainspring03192