Rolex Day-Date 36 18ct Yellow Gold — Green Ombré Diamond Dial | Ref. 128398TBR

Reference 128398TBR stands as one of the most opulent expressions of Rolex's flagship Day-Date 36 collection, a watch whose associations with heads of state, industry leaders, and cultural icons have earned it the enduring sobriquet 'the President's watch.' The 36mm case in 18-carat yellow gold carries a diamond-set bezel — baguette-cut diamonds arranged in a continuous circuit — their elongated rectangular facets providing a distinctly architectural quality that contrasts with the more common brilliant-cut pavé configuration. The President bracelet, exclusive to all-gold Day-Date references and available nowhere else in the Rolex catalogue, presents semi-circular three-piece links with a concealed folding Crownclasp.

The dial is the defining element of this reference: a green ombré surface graduating from deep forest tones at the periphery to lighter, more luminous hues at the centre, set throughout with brilliant-cut diamonds at the hour positions and anchored by baguette-cut diamonds at six and nine o'clock. Ombré dials represent one of Rolex's most technically demanding dial configurations, requiring precise control of the lacquering or gem-setting process to achieve seamless tonal transition across the full diameter. The day of the week appears at twelve o'clock in an aperture that cycles through languages at the wearer's selection, while the date appears at three o'clock, both magnified by the double-sealed sapphire crystal with Cyclops lens.

The manufacture Calibre 3255 — Rolex's contemporary benchmark movement, shared across the Day-Date 36, Day-Date 40, and Datejust 41 families — delivers 70 hours of power reserve via a Perpetual bidirectional rotor, operating at 28,800 vibrations per hour. The Chronergy escapement improves energy efficiency by 15 percent relative to conventional Swiss lever designs, while the paramagnetic Syloxi silicon hairspring ensures isochronal performance in the presence of magnetic fields. Certified as a Superlative Chronometer to ±2 seconds per day, the 3255 matches the exterior splendour of this extraordinary reference with commensurate mechanical excellence. Water-resistant to 100 metres.