ROLEX GMT-MASTER II AUTOMATIC 40MM OYSTERSTEEL REF 126710BLNR-0003 BLACK DIAL BXP COA

• Brand: Rolex
• Model: GMT-Master II (``Batman``)
• Reference: 126710BLNR-0003
• Year: 2023
• Case size: 40 mm
• Case material: Oystersteel
• Lug width: 20 mm
• Bezel: Bidirectional rotatable 24-hour graduated, two-colour blue/black Cerachrom ceramic insert, moulded numerals
• Dial: Black lacquer, applied white gold hour markers, Chromalight luminescence, blue 24-hour hand
• Crystal: Sapphire with Cyclops lens over date
• Movement: Rolex calibre 3285, perpetual self-winding
• Power reserve: Approx. 70 hours
• Escapement: Chronergy, Paraflex shock absorbers, Parachrom hairspring
• Certification: Superlative Chronometer (COSC + Rolex in-house), -2/+2 sec/day
• Functions: Hours, minutes, seconds, date, independently adjustable local hour hand, 24-hour second time zone
• Water resistance: 100 m / 330 ft
• Bracelet: Oystersteel three-link Oyster, Oysterlock folding safety clasp, Easylink 5 mm comfort extension
• Condition: Pre-owned — Excellent
• Inclusions: BXP — original box and papers
• COA: Third-party certificate of authenticity included

Provenance and collectibility — The 126710BLNR is the current-generation blue-and-black GMT-Master II, launched in 2019 and produced continuously since. Until 2021 it was offered on the Jubilee bracelet only, which is why the Oyster-fitted configuration presented here carries the original ``Batman`` name among collectors rather than the ``Batgirl`` tag applied to the five-link version. A 2023 example on Oyster therefore sits in the shorter production window and remains one of the most consistently demanded steel professional Rolex references on the secondary market.

Design and dial — The blue and black Cerachrom insert is a single piece of ceramic with the colour transition achieved during firing, a process Rolex pioneered on this colourway. It is paired with a black lacquer dial, applied white gold-surround markers to prevent tarnishing, Mercedes handset and the signature blue 24-hour hand. Chromalight luminescence gives a long-duration blue glow across markers and hands.

Movement — Calibre 3285 is the GMT variant of Rolex`s 32-series, delivering an approximate 70-hour power reserve, the Chronergy escapement for improved efficiency and magnetic resistance, Paraflex shock absorption and a Parachrom hairspring. It is certified Superlative Chronometer to -2/+2 seconds per day cased up, and permits independent local hour hand adjustment in one-hour increments without stopping the movement.

Condition — Pre-owned and graded Excellent. Case, lugs and bracelet present with minimal to no visible wear, factory finishing and case geometry intact, bezel action crisp and ceramic insert free of chips or marks. Movement running and functioning correctly across all complications.

Inclusions positioning — Supplied as a full set (BXP): original Rolex presentation box and warranty papers. Additionally accompanied by a third-party certificate of authenticity, issued independently of Rolex and separate from the factory documentation — a supplementary assurance for buyers, not a manufacturer-issued document.

(SN:126710BLNR-0003) (336833-2)

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