Rolex Datejust Yellow Rolesor Fluted Bezel — White Roman Dial | Ref. 278273

At 31 mm, the Datejust 278273 occupies the intermediate size tier in Rolex's current Datejust range — larger than the 28 mm Lady-Datejust yet more refined in proportion than the 36 mm. Reference 278273 combines Yellow Rolesor construction with a fluted yellow gold bezel and a white dial bearing applied Roman numeral hour markers, a configuration that carries forward the most traditional visual language of the Datejust lineage. The fluted bezel's geometric facets serve an aesthetic function while the yellow gold accents warm the Oystersteel case with a classical luxurious character.

Calibre 2236 — the manufacture movement developed specifically for Rolex's mid-sized and small-case references — beats at 28,800 vph and provides a 55-hour power reserve. Its defining technical characteristic is the Syloxi hairspring, fabricated from silicon in a proprietary Rolex process. Silicon is inherently non-magnetic and thermally stable, properties that translate directly to improved timekeeping accuracy over the watch's service life. The Oyster bracelet's alternating polished and satin-finished links complement the Rolesor two-tone aesthetic effectively.

The Datejust 31 sits in an intriguing market position: it serves collectors who find the 28 mm too petite but prefer a dress-oriented proportion over the sportier 36 mm. Reference 278273 with its Roman dial and fluted bezel is firmly at the classic end of the 31 mm spectrum, and the yellow gold detailing makes it one of the more distinctive options in the size. Demand for mid-sized Datejust references has broadened considerably, and pre-owned examples of this configuration hold value reliably.