Though the first Rolex Submariners were produced in 1953, and released after their debut at Basel in 1954 with the references 6200, 6204, and 6205 (differences in movements used and water resistance differentiated each), the 5512 was the first Submariner reference to feature the now-ubiquitous crown guards. Developed as a tool watch, the Submariner was marketed to commercial and recreational divers. The addition of the crown guards made the watch more robust, protecting the watch crown from unintentional damage.

Like many intricacies of collecting vintage Rolex wristwatches, the various iterations of crown guards have developed their own nicknames and followings as the design evolved. The earliest were square-shaped, of which it is estimated very few exist. It is speculated that criticism of the bulky square crown guard prompted Rolex to modify the cases they had in stock, giving raise to the “eagle beak” crown guard. Finally, Rolex produced cases with unobtrusive pointed crown guards (sometimes abbreviated by collectors as PCG), as found on the present example. These early Submariners were fitted with stunning black glossy dials and featured either two or four lines of text at 6 o’clock with gilt printing in either silver or gold (or both). By the late-1960s, the crown guards were changed to a rounder design that is still in use today.

Exceptional details present on this example make it a highly coveted reference 5512 – especially its stunning, nearly perfectly preserved glossy “exclamation mark” dial. These dial were produced only for a short time in around 1962 and are defined by the minuscule dot of luminous material present under the 6 o’clock hour marker. Scholars debate that this aesthetic quirk indicated a less radioactive material on the dial (the early 60s was when concerns about radioactive material in dials prompted producers to lower the radiation levels eventually switching from radium to tritium).

Considering the strong case with beautiful, extremely sharp bevels and the presence of the riveted bracelet stamped “1 64” - most probably the original one, having the watch been made in the third quarter of 1962 - it is safe to say that this reference 5512 is one of the most attractive and collectible representatives of this landmark model.