An 18 Carat Gold and Stainless Steel Automatic Chronograph Wristwatch Rolex Oyster Perpetual 'Cosmograph Daytona' Ref 16523 Circa 2000 nickel lever movement, 31 jewels, silvered dial, three sub-dials indicating constant seconds, 30 minutes and 12 hour registers, applied gold baton numerals, gold bezel calibrated for units per hour, polished stainless steel tonneau-shaped water resistant-type case, screw down crown, stainless steel and gold Rolex Oyster bracelet with deployant clasp, signed case, dial and movement, manufacturer's case and papers