Rolex Datejust 31 Yellow Rolesor — Champagne Diamond Dial, Diamond Bezel, Jubilee Bracelet | Ref. 278383RBR

Introduced at Baselworld 2019 as part of the 31 mm Datejust generation defined by Calibre 2236, Reference 278383RBR pairs the enduring appeal of Yellow Rolesor construction with a fully diamond-set bezel and champagne dial dressed with ten diamond hour markers. Yellow Rolesor — the registered Rolex denomination for its Oystersteel-and-18-karat-yellow-gold combination — gives the 31 mm case its distinctive two-tone warmth, while the diamond bezel intensifies the jewellery dimension with brilliant-cut stones that ring the case in continuous sparkle.

The champagne dial occupies a category of its own within Rolex's chromatic palette: warm without being gold, complex without being busy, it pairs equally well with the yellow gold crown and bezel as it does with the steel case flanks. Diamond hour markers at each position replace the applied batons of plainer Datejust variants, ensuring that the dial reads as a cohesive jewellery composition rather than a punctuated one. The 2.5x Cyclops magnification lens brings the instantaneous date at 3 o'clock into sharp focus.

Calibre 2236 — the movement developed specifically for the Lady and mid-size Datejust lines — powers the 278383RBR with a Syloxi silicon hairspring, approximately 55 hours of power reserve, and a stop-seconds mechanism for precise time-setting. The yellow Rolesor Jubilee bracelet, with its five-piece semi-circular links alternating steel and yellow gold, was the original bracelet specification for the 1945 Datejust and remains the most historically resonant choice. The concealed Crownclasp and Twinlock crown provide Oyster-standard water resistance to 100 metres.