GMT-Master II 40mm Two-Tone "Guinness" 126713GRNR | 2026 Excellent Full Set

The Story: A Modern Two-Tone Evolution

Originally engineered in 1955 for international airline pilots crossing multiple time zones at the dawn of the jet age, the Rolex GMT-Master II has become one of the most recognizable luxury sports watches in the world. Unveiled to widespread acclaim, Reference 126713GRNR introduced an entirely new color profile to the modern collection: the black and grey Cerachrom ceramic bezel, earning the moniker "Guinness" (or "Bruce Wayne Rolesor"). Pairing the stealthy tones of its day/night ceramic insert with the warmth of 18K yellow gold and rugged Oystersteel, it redefines the classic two-tone aesthetic for modern collectors.

The Craft: Yellow Rolesor Architecture & In-House Calibre 3285

The 40mm case utilizes Rolex's signature Yellow Rolesor construction: a harmonious marriage of resilient 904L Oystersteel with solid 18K yellow gold on the bezel, winding crown, and bracelet center links. The bidirectional rotatable bezel is fitted with a two-colour, 24-hour graduated Cerachrom insert in black and grey ceramic, featuring molded numerals and graduations coated in yellow gold via PVD.

The dial execution balances utility with high-end refinement:

• Gloss Black Base: Deep, mirror-finish black lacquer providing maximum contrast.
• Gold Furniture: Applied hour markers and signature Mercedes hands framed in 18K yellow gold to resist tarnishing, filled with long-lasting blue Chromalight luminescence.
• Independent 24-Hour Hand: A dedicated 18K yellow gold arrow-tipped hand indicating home time against the 24-hour bezel, while the local hour hand can be adjusted independently forward or backward in one-hour increments.
• 3 o’clock: Classic date aperture magnified 2.5x under the anti-reflective Cyclops lens.

Behind the solid caseback sits the Manufacture Rolex Calibre 3285, a movement entirely developed and manufactured in-house. Equipped with Rolex’s patented Chronergy escapement and a blue Parachrom hairspring, it offers resistance to shocks and magnetic fields while delivering an extended power reserve of approximately 70 hours. Certified as a Superlative Chronometer, it is tested to an accuracy standard of -2/+2 seconds per day.

Condition & 2026 Complete Collector Set

This timepiece is presented in Mint condition, retaining crisp factory bevels, clean polished flanks, and a tight, pristine Jubilee bracelet. The front sapphire crystal and Cerachrom bezel insert are entirely free of scratches or blemishes.

It is delivered as a Complete 2026 Full Set, including its original green presentation box, outer box, leather warranty card holder, instruction booklets, green Superlative Chronometer tag, serialized white barcode tag, and the official Rolex international warranty card dated March 5, 2026. Backed by an active 5-year Rolex factory warranty through March 2031, this two-tone GMT-Master II is ready for immediate collection or daily wrist rotation.