ROLEX 1600 Brand ROLEX Caliber 1600 Size 9 1/4 Function Version Hands Stem 4507 Stem (subs.) Stem (2 pce) Balance staff Balance staff (subs.) Mainspring (subs.) 0,80x 8,0x0,10 Mainspring (subs.) 2184 Battery WatchpartsPart NocaliberdescriptionoriginalArtno.227Sweep second pinion (Generic)981002271600401Winding stem (Generic)8024507770Mainspring (Generic)02184