Rolex Cosmograph Daytona, ref. 16523, serial A, steel and gold, 1990-1999. Mechanical movement with automatic Zenith movement, highly reworked by Rolex. Central hours and minutes, small seconds at 6 o'clock. 1/8 second chronograph with the central hand, 30 minute counter at 3 o'clock, 12 hour counter at 9 o'clock. Second interrupt for precise setting of time. Oyster case in steel and yellow gold, diameter 40 mm. with monobloc case band. Fixed, yellow gold bezel with engraved, tachimeter scale to measure speed. Black dial with contrasting circular counters. Scratch resistant sapphire crystal. Oyster bracelet with three lines of links in steel and gold. Deployment clasp with Flip-lock security clasp. CONDITION: EXCELLENT It comes with a standard box. Insured shipping with tracking via DHL.