A stainless steel chronograph wristwatch with registers and bracelet, Rolex, Cosmograph, 'Daytona', Ref. 6239, Circa 1962

nickel lever movement, 17 jewels, monometallic compensation balance, free-sprung regulator, adjusted to 3 positions, black dial, applied square and luminescent indexes to the outer silvered chapter ring with red seconds track, three engine-turned silvered subsidiary dials indicating constant seconds, 30 minutes and 12 hours registers, tonneau water-resistant-type case with two round chronograph pushers in the band, bezel engraved and calibrated for 300 units, screw back and screw-down crown, case, dial and movement signed, with stainless steel Rolex Oyster bracelet and deployant clasp.

For a note on so-called 'Paul Newman' models, see lot 155 in this sale.

This particular example features a steel bezel engraved and calibrated for 300 units per hour. Such bezels appeared on the first examples of the Ref. 6239 until it was replaced not long after its release by a bezel calibrated for 200 units per hour.

For a similar example of this model, Ref. 6239, with a slightly different dial, see Skeet & Urul, Vintage Rolex Sports Models, p. 112.