In 1967, Rolex officially introduced the first ever Sea-Dweller model via ref. 1665. Early examples featured a dial with two red lines of texts “SEA-DWELLER” and “SUBMARINER 2000”, earning its nickname the “Double Red” Sea-Dweller. By the mid-1970s, Rolex replaced the double red dials with the pure “Great White” dial, removing the two lines of red texts. Without a doubt, early examples of the “Great White” Sea-Dweller are rare. In production for a mere two years, examples with a “Rail Dial” are certainly elusive and highly sought-after. 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 presents this designation.

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