Our remarks

Rolex Sea-Dweller 43 “Red Writing” Mark I – Ref. 126600 – Stainless Steel – 2017 – Box & Papers – Full Set

We are pleased to offer this highly sought-after Rolex Sea-Dweller 43 “Red Writing” Mark I, Reference 126600, the launch-year execution of Rolex’s modern Sea-Dweller. Delivered in 2017 and accompanied by its full set of box and papers, this Mark I variant is especially desirable as the earliest dial configuration of the 43 mm generation—distinguished by its subtle font characteristics and collectability.

Crafted from Rolex’s corrosion-resistant Oystersteel, the 43 mm case represents a major evolution of the Sea-Dweller line, offering increased wrist presence while maintaining the professional tool-watch DNA of the model. The signature Helium Escape Valve, Triplock crown, and robust case architecture ensure the watch’s 1,220-meter depth rating and legendary durability.

The black dial is the star of this reference, featuring the celebrated single line of red “SEA-DWELLER” text, a historic nod to early vintage models from the 1960s and ’70s. As a Mark I dial, this example displays the first-series font spacing and layout seen only in early 2017 production, making it especially collectible among Sea-Dweller enthusiasts.

Cerachrom technology defines the unidirectional bezel, offering a virtually scratchproof surface with crisp platinum-filled numerals. Chromalight luminous markers and hands ensure exceptional legibility in all conditions.

The watch is powered by the Rolex Caliber 3235, a state-of-the-art movement offering improved efficiency, shock resistance, and an approximately 70-hour power reserve—delivering both reliability and precision in demanding environments.

Fitted with the Oyster bracelet featuring the Glidelock extension system, the watch offers exceptional comfort, security, and quick adjustment capability.

This Rolex Sea-Dweller 43 “Red Writing” Mark I comes complete with:

- Rolex presentation box, outer box

- Warranty card (2017)

- Booklets & accessories

- Card holder

- Hang tag COSC 

- Invoice

- Full set

"The 126600 Mark I combines modern engineering with an unmistakable vintage-inspired touch, offering collectors a rare opportunity to acquire the inaugural dial configuration of one of Rolex’s most important contemporary dive watches."