In 1967, Rolex officially introduced the first ever Sea-Dweller model via ref. 1665 featuring a two red lines of texts “SEA-DWELLER” and “SUBMARINER 2000” earning its nickname the Double Red Sea-Dweller. However, Rolex replaced the double red dials with the pure “Great White” dial removing the two lines of red texts. While the majority of the attention were for earlier examples of the reference, it is with no doubt that early examples of the “Great White” are rare. In production for only a mere two years, the Rail Dial is certainly an elusive timepiece. Manufactured by the Stern company (now owned by Patek Philippe), these rail dials differ from traditional dials manufactured by Singer.

Most notably, the last “E” of “superlative” and the “Y” of “officially” are perfectly aligned, as are the “C” of “chronometer” and “certified”. This creates a very pleasing and unusual vertical “corridor” (or rail) of space between the last two lines of the designation, and it is what gives the dial its nickname. Another detail unique to the Rail Dial is the Swiss designation reading “T Swiss T < 25”: no other Sea-Dweller dial, including the Comex 1665 (whose dial was made by Stern as well) presents this designation.

The present Rolex Sea-Dweller ref. 1665 from circa 1978 with a correct 5.7 million serial is certainly a delight for collectors to witness. Boasting a clean and attractive dial with large creamy white lume plots matching the material on the hands, the case remains nice and thick with an attractive dark navy blue bezel insert that has faded over the years heightening its vintage appeal. The present example is offered with its original guarantee dated 17th December 1980.