An early, transitional Submariner between the small crown 6536 and the “Big Crown” 6538, the present double reference 6536/6538 is an extraordinary find. Less than a dozen are publicly known - all bearing case numbers beginning with 89'XXX dating to 1955, with this example being the earliest to appear to-date.
With dials bearing a unique red depth rating, these models are further noteworthy in that their casebacks have 6538 crossed-out and are re-engraved with 6536. These casebacks were originally intended for the “Big Crown” reference 6538 model, but were re-worked by Rolex for this incredibly rare transitional model as a cost-savings measure.
The luminous marker at 6 o'clock is notably brighter than the other luminous hour markers. This feature allowed divers to orient themselves in the dark, and is seen in other 6536/6538 examples. Its long hour hand, early non-hash bezel insert, and ornate engraving inside the center of the caseback are reminiscent of the iconic reference 6200 “Big Crown” Submariner.
The present example, fresh to the auction market, stands out for its exceptional state of preservation. The case and bezel exhibit minimal signs of wear, with the original factory finishing still crisp and sharp. The original luminous material is still present on the bezel’s triangle at 12 o’clock. The dial is also beautifully preserved, showing pleasing signs of aging and fully intact luminous hour markers.