The present watch is an early example of reference 6239. With a 1.4 million serial number, it was released soon after the first series reference 6239. During the beginning of the model's production, Rolex experimented with various dial configurations in order to realize its design blueprint for the Cosmograph Daytona. While earlier reference 6239s featured a small Daytona script below "Rolex Cosmograph", Rolex also introduced a different dial configuration displaying a slightly larger "Daytona" font below the “Cosmograph” inscription. These early dials represent Rolex's ingenuity and willingness to experiment with design composition. It was only much later that Rolex definitively printed the "Daytona" designation above the subsidiary register positioned at 6 o'clock.

Furthermore, the subsidiary registers have aged to a particularly even and stunning tobacco brown tone, contrasting against the bold and unblemished white graphics.The dial also displays luminous dots that have aged with light patina.

Apart from these details, the case is also offered in superb condition. With sharp finishes to the top of the lugs and a crisp case back, it’s an incredibly well-preserved tool watch. The bezel, calibrated to 300 units, is correct for early examples, having been kept in excellent condition with all enamel present. Furthermore, the movement bridge is stamped ROW, indicating this watch was made to be exported to the United States of America.