A stainless steel chronograph wristwatch with registers, Rolex, 'Cosmograph Daytona', 'Paul Newman', ref.6239, circa 1960

nickel lever movement, (cal.722), 17 jewels, mono-metallic compensation balance, adjusted to 3 positions, black dial, three silvered engine turned subsidiary dials for constant seconds, 12-hour and 30-minute registers, water-resistant type case with screw-down crown and case back, steel polished bezel calibrated for units per hour, case, dial and movement signed, with a stainless steel Rolex folding clasp