the Oyster Perpetual Cosmograph Daytona model, with tonneau case, pavé diamond bezel, black dial applied with luminescent baton numerals, sweep seconds, three subsidiary dials for constant seconds, 30-minute and 12-hour registers, 44-jewel automatic movement, completed by a brown leather strap with a Rolex 18k gold déployant clasp, in 18k gold, dial, case and movement signed