Rolex Datejust 31 Yellow Rolesor — Dark Grey Diamond Dial | Ref. 278243

Reference 278243 belongs to the current-generation Datejust 31, a reference series introduced from 2018 onwards that brought the 31 mm format into alignment with Rolex's latest case architecture and movement family. The Yellow Rolesor configuration — combining Oystersteel with 18ct yellow gold — lends this piece a warm, classic character, while the dark grey dial set with diamond hour markers introduces a moody, contemporary contrast that elevates the specification beyond a conventional Rolesor offering.

This reference is driven by Calibre 2236, Rolex's current manufacture self-winding movement for the Lady-Datejust and Datejust 31 format. The 2236 features the Syloxi silicon hairspring — providing excellent anti-magnetic performance — alongside a 55-hour power reserve and the Rolex Paraflex shock absorber. The Yellow Rolesor case pairs an Oystersteel mid-section with yellow gold crown, bezel and caseback elements, while the Jubilee bracelet in matching Rolesor follows the classic five-link configuration that has defined the Datejust aesthetic for decades.

The 278243 sits squarely in the sweet spot of the Datejust 31 market: accessible enough for a buyer entering the Rolesor segment, yet decorative enough with its diamond dial to satisfy those seeking genuine jewellery-watch character. The dark grey dial with diamond indices is a specification that photographs exceptionally and holds consistent desirability across demographics. For pre-owned buyers, this reference offers current-generation mechanics and aesthetics at a meaningful discount to new retail.