Rolex. An 18k White Gold Automatic Chronograph Wristwatch with Green Chalcedony DialSigned Rolex, Oyster Perpetual, Superlative Chronometer, Officially Certified, Cosmograph Daytona, Ref. 16519, Case No. P162588, Circa 2000Cal. 4130 automatic movement, 44 jewels, green chalcedony dial, applied Roman and baton numerals, three subsidiary dials for 12 hour and 30 minute registers and constant seconds, tonneau-shaped water-resistant-type case, bezel calibrated for 400 units per hour, two round screw down chronograph buttons in the band, screw down crown, screw back, 18k white gold Rolex deployant clasp, case, dial, and movement signed39.5mm diam.