The reference 6239 was the very first model of the celebrated "Daytona" series and could be found in sales catalogues in Europe as of 1964, though it is thought that the model was available in the US already in 1963. This model was available in stainless steel, 14k and 18k gold, reference 6239 was the firm's first chronograph with the tachometer scale engraved on the bezel and the subsidiary dials printed in a different color than the main dial for better readability.

The present watch is a notable example as its serial number dates to circa 1964, making this watch part of the earlier production for this reference. Furthermore, the attractive silvered sunburst dial is rare and only found on these earlier models as well as the elongated hour hand. The Rolex Oyster expandable bracelet and deployant clasp is stamped 1 68.

The present watch has been kept in the same family since it was purchased in the 1960s.