Rolex Sea-Dweller · Reference 16600
Rolex Sea-Dweller 16600
Known as Sea-Dweller (aluminum-bezel, the last of its kind)
The Sea-Dweller 16600 is the watch that closed out an era at Rolex. It ran from 1988 through 2009, roughly twenty years, and it is the final Sea-Dweller built with an aluminum bezel insert and a 40mm Oyster case before the range grew to 43mm and switched to a Cerachrom ceramic bezel with the 116600 in 2008 to 2009. Under the caseback sits the caliber 3135, the same workhorse automatic that ran the five-digit Submariner Date and Datejust, so parts, service, and reliability are never a question. Water resistance is rated to 1,220 meters, 4,000 feet, and the case carries the gas escape valve at 9 o'clock that Rolex co-developed for saturation divers coming up from decompression. No cyclops over the date, sapphire crystal, solid-link Oyster bracelet with a diver's extension. For a lot of collectors this is the sweet spot of the entire Sea-Dweller line: modern enough to wear hard and service easily, old enough to still feel like a tool watch instead of a status piece.
Produced: 1988 to 2009
In stock at Ultimate Diamond
3 pieces on the counter right now.
Specifications
- Reference
- 16600
- Model
- Oyster Perpetual Date Sea-Dweller
- Case Diameter
- 40mm
- Case Thickness
- approximately 14.5mm
- Lug Width
- 20mm
- Case Material
- 904L stainless steel (Rolex now calls it Oystersteel)
- Bezel
- Unidirectional rotating 60-minute dive bezel, aluminum insert
- Crystal
- Flat sapphire, no cyclops
- Dial
- Glossy black, applied Rolex coronet, no date magnifier
- Movement
- Rolex caliber 3135, self-winding mechanical
- Jewels
- 31 jewels
- Frequency
- 28,800 vph (4 Hz)
- Power Reserve
- approximately 48 hours
- Escapement
- Breguet overcoil hairspring, later production years fitted with the blue Parachrom hairspring
- Winding
- Perpetual rotor, bidirectional
- Water Resistance
- 1,220 meters / 4,000 feet
- Helium Escape Valve
- Yes, at 9 o'clock
- Crown
- Triplock triple-gasket screw-down
- Bracelet
- Oyster, solid links (later production), folding Oysterlock clasp with diver's extension
- Lume
- Tritium through roughly 1997 to 1998, Luminova next, then Super-LumiNova on the latest examples
Market & Value
We buy and sell 16600s regularly, and the pricing has been steady and honest for a while now. Clean examples in good shape with an aluminum bezel that has not faded to nothing generally trade in the $8,000 to $11,000 range, with full box and papers pushing the top of that band and beyond. Beat-up, service-dial, or polished-thin cases sit lower. The market on this reference has firmed up over the last few years, up roughly 8 percent year over year in the aggregate data, and the reason is simple supply and demand: it has been out of production since 2009, so the pool only shrinks. Two things move the money on a 16600. First is the lume generation, because a genuine tritium dial reading T SWISS T < 25 under the six carries a premium over the later SWISS and SWISS MADE Luminova and Super-LumiNova dials, especially if the tritium has aged to a warm cream. Second is originality: matching dial and hands, an unpolished case with sharp lugs, and an untouched bezel insert. A 16600 is one of the more liquid discontinued Rolex dive references out there, so a correct one sells fast and a wrong one sits.
What to Know Before You Buy
Buy the condition, not the story. On a 16600 the first thing we check is whether the case has been over-polished, because these were tool watches and plenty of them lived hard lives before ending up on a dealer's tray. Sharp, full lugs and crisp case flanks are worth real money over a soft, rounded case. Next is the dial and the lume: confirm the dial matches its era. Tritium dials (T SWISS T < 25) belong to the earlier years and are frequently faked or swapped, so provenance and font details matter. A relumed or service-replaced dial is not the end of the world for a wearer, but it changes the value, so know what you are paying for. The bezel insert should read cleanly and the pearl at 12 should be present. Mechanically the caliber 3135 is bulletproof and serviceable at any Rolex-competent watchmaker, so a running example that has been away from service for a while is fine as long as the case is right. Check that the helium escape valve and Triplock crown seal properly if you actually intend to dive it, though most of these live on wrists, not reefs. Finally, box and papers add value but the watch itself carries the weight here; a correct, honest, unpolished 16600 with no papers beats a papered one that has been refinished.
Rolex Rolex Sea-Dweller & Deepsea Encyclopedia
Read the full guide →Buying or selling a 16600?
Ultimate Watch buys and sells the Sea-Dweller 16600 on 47th Street. We have been on this block since 1959, we write checks for these watches every week, and we know the difference between a sharp original tritium example and a polished service-dial one at a glance. If you have a 16600 to sell, bring it in to 19 W 47th St or call us for a same-day cash offer; we handle box, papers, and no-papers watches alike and we pay on originality, not on a story. If you are buying, tell us the dial generation and condition you want and we will source a correct one. Bring it in, call, or request an offer.