Rolex Datejust Yellow Rolesor — Mint Green Diamond Dial | Ref. 279163

Reference 279163 represents the Lady-Datejust 28 in Yellow Rolesor — Rolex's term for the combination of Oystersteel and 18-carat yellow gold — delivering an elegant two-tone aesthetic that has defined the Datejust lineage since 1945. The 28 mm Oyster case pairs a domed bezel set with 11 brilliant-cut diamonds against a mint green dial that itself carries a full diamond-set hour markers, creating layers of brilliance across both chapter ring and centre. The Jubilee bracelet, an original Datejust detail launched alongside the reference's 1945 predecessor, provides five-piece link construction with a refined, dressy drape on the wrist.

At the heart of the watch sits Calibre 2236, a movement manufactured entirely in-house at Rolex's Bienne facility and reserved exclusively for the Datejust 28 and 31 mm models. The 2236 oscillates at 28,800 vph and incorporates the Syloxi hairspring — a silicon component machined via LIGA microfabrication — affording exceptional resistance to magnetic fields and thermal variation while delivering a 55-hour power reserve. Paraflex shock absorbers further protect the delicate regulating organ.

Condition and provenance details for this example should be confirmed at point of enquiry, though Yellow Rolesor references in this size retain strong collector desirability owing to the scarcity of 28 mm diamond-dial configurations. The mint green dial colourway, introduced as part of Rolex's expanded palette, positions this piece firmly among the more distinctive Lady-Datejust variants currently in production.