Rolex. A Stainless Steel Automatic Chronograph Wristwatch with Bracelet Signed Rolex, Oyster Perpetual, Superlative Chronometer Officially Certified, Cosmograph, Daytona, Ref. 16520, Case No. R944844, Circa 1988Cal. 4030 automatic movement, 31 jewels, black dial, applied luminous baton numerals, luminous hands, three black subsidiary dials with silvered chapter rings for 12 hour and 30 minute registers and constant seconds, tonneau-shaped water-resistant-type case, bezel calibrated for 200 units, two screw down chronograph buttons in the band, screw down crown, screw back, stainless steel Rolex Oyster bracelet and deployant clasp, case, dial, and movement signed39mm diam.