Rolex Sea-Dweller 1665

Rolex

Manufacturer Rolex Year Circa 1968 Reference No 1665 Movement No D’092’021 Case No 1’758’317, inside caseback stamped "317", “IV.67” Model Name Sea-Dweller, “Double Red Tropical MK II” Material Stainless steel Calibre Automatic, cal. 1570, 26 jewels Bracelet/Strap Stainless steel Rolex Oyster bracelet stamped “9315”, endlinks stamped “380”, max length 185mm Clasp/Buckle Stainless steel Rolex Oyster deployant clasp Dimensions 40mm diameter Signed Case, dial, movement, bracelet and clasp signed Accessories Accompanied by Rolex hang tag and associated presentation box. Robust, attractive, and purpose-built, the Double Red Sea‑Dweller has become a cult favourite among both vintage Rolex collectors and professional divers. Engineered for extreme depths, it features a helium escape valve—essential for safe decompression after long spells in saturation diving. Although the reference 1665 was officially launched in 1971, unofficial production began as early as 1967. The much‑coveted “double red” dial printing ceased in 1977 and was replaced by white text until the reference ended production in 1981. This example, bearing a serial around 1.7 million, is fitted with the correct “thin case” and is offered in excellent condition for its age, having been carefully maintained over the past five decades. The last 3 digits of the case number are correctly engraved inside the caseback. The bezel has mellowed to an attractive light‑grey tone, while the dial has developed a beautiful tropical patina—qualities that further enhance its vintage appeal for collectors.