The Rolex Sea-Dweller Ref. 16660, serial 9.7xx.xxx, offered here with its full set including box, papers, and the original numbered tool kit, represents one of the most desirable neo-vintage professional divers ever produced. Dated 1989, this transitional model bridges the early Sea-Dweller references with the modern era, featuring technical upgrades while still carrying the unmistakable vintage charm collectors seek. The case has been professionally polished and the writings on the back case are partially missing.
Nicknamed the “Triple Six,” the 16660 introduced a thicker sapphire crystal and a redesigned helium escape valve, allowing an impressive depth rating of 1220m (4000ft)—doubling that of the Submariner and reinforcing the Sea-Dweller’s status as a true saturation diver’s watch. The dial retains its original tritium lume, aging gracefully with natural patina, while the characteristic white gold surrounds (“bicchierini”) frame the luminous plots, enhancing legibility and giving a balanced aesthetic.
Powered by the robust Caliber 3035 automatic movement with quickset date, the watch combines precision with reliability. The 40mm stainless steel case and Oyster bracelet maintain Rolex’s timeless proportions and rugged elegance. Complete examples like this, with matching toolkit and paperwork, are becoming increasingly scarce and highly sought after by collectors.
This 16660 is more than a tool watch—it is a pivotal piece of Rolex diving history, embodying both technological evolution and enduring design.