Rolex Datejust 31 Yellow Rolesor — Dark Mother-of-Pearl Diamond Dial, Fluted Bezel | Ref. 278273

Among the current-generation Datejust 31 references, 278273 stands out for combining the atmospheric depth of a dark mother-of-pearl dial with the structured elegance of Yellow Rolesor and a fluted bezel. The 31 mm Oyster case in Oystersteel with 18ct yellow gold appointments frames a dial whose dark MOP surface — ranging from near-black to deep blue-grey depending on the light — provides a dramatic counterpoint to the warmth of the gold. Diamond hour markers scatter light across this moody backdrop, creating a dial composition of considerable visual sophistication.

As a 278xxx reference, this Datejust 31 is driven by the Calibre 2236 — Rolex's newest manufacture movement developed specifically for the 31 mm case family. The 2236 represents a significant upgrade over its predecessor, incorporating a Syloxi silicon hairspring that offers improved resistance to magnetism and temperature fluctuations, alongside a Perpetual bidirectional rotor and a power reserve of approximately 55 hours. Superlative Chronometer certified, the 2236 achieves ±2 seconds daily accuracy. Water resistance is rated to 100 metres.

Reference 278273 is part of the modern Datejust 31 generation introduced with the upgraded Calibre 2236, making it technically superior to earlier 178xxx examples while maintaining the aesthetic continuity collectors appreciate. The dark MOP and diamond combination has proven particularly desirable for those who collect Datejust 31 watches as high jewellery crossovers. The Yellow Rolesor execution grounds the piece in Rolex's most iconic two-tone tradition, ensuring that 278273 will remain a reference point in this size category for years to come.