SOLD
Ref. 126600
50th Anniversary model
More collectible Mark 1 dial
2018
Local AD
Appearance is at least 9.5 out of 10. Like new, some factory stickers still installed
Complete retail package in Rolex double box
The Rolex Sea-Dweller 43mm Single Red (Mk1, Ref. 126600) is a professional dive watch that combines Rolex’s legendary engineering with a historic nod to the original Sea-Dwellers of the 1960s and 70s. Nicknamed the “Single Red” for the single line of red text on its dial, this model has quickly become a favorite among collectors for its blend of modern specs and vintage-inspired details.
Key Features & Details
The 43mm Oystersteel case makes the SD43 larger than the classic Submariner, giving it a bold wrist presence while maintaining Rolex’s balance and refinement. The standout detail is the matte black dial with “SEA-DWELLER” printed in red, a tribute to the 1967 original. Large Chromalight hour markers and hands glow bright blue for excellent legibility in dark conditions.
Inside is the Rolex Caliber 3235 automatic movement, boasting a 70-hour power reserve, Chronergy escapement, and Superlative Chronometer certification for exceptional accuracy and reliability.
Built for the deep, the Sea-Dweller offers an impressive water resistance of 1,220 meters (4,000 feet), complete with a helium escape valve for saturation diving. The unidirectional rotatable ceramic bezel with platinum-coated numerals ensures divers can track time with confidence.
The watch is fitted with a robust Oyster bracelet featuring the Glidelock extension system and Fliplock diver’s extension link, allowing for quick adjustments over a wetsuit or for everyday comfort.
Why Collectors Love the SD43 Mk1
The “Single Red” Mk1 Sea-Dweller was introduced in 2017 to mark the 50th anniversary of the Sea-Dweller line. Unlike later batches, the Mk1 dials are characterized by their specific font style and spacing, making them highly desirable to Rolex enthusiasts and collectors. Its limited production window only adds to its collectibility.
With its professional diving credentials, historic red text, and larger case size, the SD43 strikes a perfect balance between tool watch ruggedness and luxury appeal.
Frequently Asked Questions (FAQs)
Q: Why is it called the “Single Red”?
Because of the single line of red “SEA-DWELLER” text on the dial—a throwback to the vintage Sea-Dwellers from the 60s.
Q: How deep can the Rolex Sea-Dweller go?
It’s rated for 1,220 meters (4,000 feet), more than three times deeper than a Submariner.
Q: What makes the Mk1 dial special?
Early-production Mk1 models feature unique font and spacing on the red text, making them rarer and more collectible than later dial variations.
Q: How does it compare to the Submariner?
The Sea-Dweller is larger at 43mm, thicker, and features a helium escape valve for professional diving—whereas the Submariner is slimmer and rated to 300 meters.
Q: Is this watch a good investment?
Yes. Due to its short production period and “Single Red” heritage link, Mk1 SD43 models are especially sought after in the collector market.
MODEL CASE: Oyster, 43 mm, Oystersteel
BEZEL: Unidirectional rotatable 60-minute graduated, scratch-resistant Cerachrom insert in black ceramic, numerals and graduations coated in platinum
DIAL: Black
MOVEMENT: Perpetual, mechanical, self-winding
CALIBER: 3235, Manufacture Rolex
POWER RESERVE: Approximately 70 hours
BRACELET: Oyster, flat three-piece links
CERTIFICATION: Superlative Chronometer (COSC + Rolex certification after casing)
WATER RESISTANCE: Waterproof to 1,220 metres / 4,000 feet, helium escape valve.
luxurywatchesbyncash
