PUW 663S Brand PUW Caliber 663S Size 11 1/2 Function Version Hands 0,90x1,50 Stem 6080 Stem (subs.) Stem (2 pce) Balance staff 30017 Balance staff (subs.) Mainspring (subs.) 1,15x10,5x0,12 Mainspring (subs.) Battery WatchpartsPart NocaliberdescriptionoriginalArtno.401Winding stem8026080410= 661Winding pinion with square hole97500410661723Balance staff ST -shock-absorber802300172576= 661Date jumper975025766612577= 663Day jumper025998