Attractive, durable and capable, it is no wonder why the Double Red Sea-Dweller has been dubbed a cult favourite, not only among vintage Rolex collectors, but also diving professionals. Designed to be worn at great depths, it is equipped with an exclusive helium expulsion valve that is indispensable during the decompression process after surfing the deepest parts of the ocean. While the ref. 1665 was officially released in 1971, the first examples of the reference were unofficially produced since 1967. The highly coveted “double red” lines were ceased in 1977 and subsequently replaced by white writing on the dial until the end of the reference’s production in 1981.

Of all the dial configurations seen on the ref. 1665, the “Mark II” dials are perhaps the most coveted, thanks to a few distinctive desirable features. The most apparent characteristic of this dial is the crisp and well-defined print of the lines “Sea-Dweller, Submariner 2000” in bright red. The font is also smaller on the second line. Another interesting nuance is that the coronet spikes are distorted and the "O" under it is almost non-existent.

Bearing a 1.7 million serial, the present Double Red Sea-Dweller is offered in excellent condition for its age, and has been well looked after over the last five decades. While the bezel has developed into an attractive light grey hue, the dial captured within has aged with a beautiful tropical hue further enhancing the vintage aesthetic collectors look for.