Rolex Datejust 31 Yellow Rolesor — Champagne Index Dial | Ref. 278243

Reference 278243 is the current-generation Datejust 31 in Yellow Rolesor — marked by the 278xxx reference series that introduced Calibre 2236 and subtle case refinements to the midsize Datejust family. Paired with a champagne dial and yellow gold applied index markers, this combination achieves a warm chromatic harmony between the dial surface, the 18 ct yellow gold bezel and crown, and the Jubilee bracelet's centre links — a look that has anchored the Datejust's appeal across decades.

Calibre 2236 represents Rolex's modern manufacture movement designed specifically for the 31 mm case diameter. It features the Syloxi hairspring — a silicon component offering superior isochronism and resistance to magnetism and temperature fluctuation — along with the Rolex Perpetual rotor and a power reserve in excess of 55 hours. The Oyster case delivers 100 metres of water resistance, and the signature Cyclops lens sits above the date aperture at three o'clock.

What distinguishes the 278xxx generation from its 178xxx predecessor is the movement architecture: Cal 2236 represents a meaningful advancement in accuracy, reliability, and service longevity. For the collector, this makes reference 278243 the definitive modern expression of the Yellow Rolesor Champagne Datejust 31. It appeals equally to first-time watch buyers seeking a proven, versatile dress watch and to established collectors building a complete run of Datejust generations. Pre-owned examples in unworn or like-new condition command significant premiums.