A true icon of vintage Rolex sports watchmaking, the Sea-Dweller reference 1665, better known among collectors as the “Double Red Sea-Dweller” (DRSD), represents a defining chapter in the evolution of professional dive watches. Developed to meet the demands of saturation divers, the reference 1665 introduced several important innovations, most notably Rolex’s first helium escape valve. Its distinctive, thicker stainless steel case was engineered to withstand the extreme pressures encountered at depth, while the Triplock winding crown helped secure its impressive water resistance of 610 meters (2,000 feet).
This example features a 40mm stainless steel case surrounding a stunning matte Mark IV dial, distinguished by its signature double lines of red text reading “Sea-Dweller” and “Submariner 2000.” As is common for DRSD’s, there is extremely minor paint loss along the minute track and at the dial’s edge, but it has been stabilized. Equally compelling is the original aluminum bezel insert, which has developed an attractive tropical transformation over the decades, taking on a rich espresso-brown tone. This naturally aged coloration adds considerable character and delivers the warm, unmistakable aesthetic that makes vintage tool watches so appealing to collectors. The case bears a serial number in the 4.08 million range, dating its production to approximately 1975.
The watch is fitted with its period-correct stainless steel Rolex 9315 Oyster bracelet, featuring 11 links, a folding clasp, diver’s extension, and hollow 385 end links. An especially interesting detail on this example is the absence of the date code typically found on Rolex clasps. Between 1972 and 1975, Rolex temporarily suspended the practice of date-stamping its clasps. Examples from this transitional period are particularly collectible, with their diver’s extensions displaying distinctive markings such as the correct “PATENTED” inscription or the now-famous “PATENT PENDING” and “PATETED” variations. The plexiglass crystal exhibits the expected signs of wear for a vintage example, including minor dings and surface scratches, while remaining in overall good condition.
The watch presents exceptionally well for its age, showing only a handful of minor scratches across the case and bracelet, consistent with careful wear over the decades. Just serviced by a professional watchmaker, it is running exceptionally well and demonstrating excellent timekeeping performance.
A true icon of vintage Rolex sports watchmaking, the Sea-Dweller reference 1665, better known among collectors as the “Double Red Sea-Dweller” (DRSD), represents a defining chapter in the evolution of professional dive watches. Developed to meet the demands of saturation divers, the reference 1665 introduced several important innovations, most notably Rolex’s first helium escape valve. Its distinctive, thicker stainless steel case was engineered to withstand the extreme pressures encountered at depth, while the Triplock winding crown helped secure its impressive water resistance of 610 meters (2,000 feet).
This example features a 40mm stainless steel case surrounding a stunning matte Mark IV dial, distinguished by its signature double lines of red text reading “Sea-Dweller” and “Submariner 2000.” As is common for DRSD’s, there is extremely minor paint loss along the minute track and at the dial’s edge, but it has been stabilized. Equally compelling is the original aluminum bezel insert, which has developed an attractive tropical transformation over the decades, taking on a rich espresso-brown tone. This naturally aged coloration adds considerable character and delivers the warm, unmistakable aesthetic that makes vintage tool watches so appealing to collectors. The case bears a serial number in the 4.08 million range, dating its production to approximately 1975.
The watch is fitted with its period-correct stainless steel Rolex 9315 Oyster bracelet, featuring 11 links, a folding clasp, diver’s extension, and hollow 385 end links. An especially interesting detail on this example is the absence of the date code typically found on Rolex clasps. Between 1972 and 1975, Rolex temporarily suspended the practice of date-stamping its clasps. Examples from this transitional period are particularly collectible, with their diver’s extensions displaying distinctive markings such as the correct “PATENTED” inscription or the now-famous “PATENT PENDING” and “PATETED” variations. The plexiglass crystal exhibits the expected signs of wear for a vintage example, including minor dings and surface scratches, while remaining in overall good condition.
The watch presents exceptionally well for its age, showing only a handful of minor scratches across the case and bracelet, consistent with careful wear over the decades. Just serviced by a professional watchmaker, it is running exceptionally well and demonstrating excellent timekeeping performance.
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