Rolex Lady Datejust 28mm Pave Diamond Dial and Bezel Solid 18K Yellow Gold President Bracelet Watch Ref. 279138RBR Unworn W/Box and Papers - An exquisite expression of elegance and precision, the Rolex Lady-Datejust Ref. 279138RBR embodies the pinnacle of feminine luxury within the world of fine watchmaking. Crafted entirely in solid 18K yellow gold and adorned with brilliant diamonds, this exceptional timepiece is a radiant showcase of Rolex's unrivaled expertise in both horology and gem-setting. The dial is fully paved with diamonds, creating a mesmerizing surface of light and brilliance. Each stone is meticulously selected by expert gemmologists and hand-set with extraordinary precision, ensuring perfect alignment and maximum radiance. The result is a dial that sparkles with remarkable intensity, offering both opulence and refined legibility. Encircling the dial, the bezel is set with 44 brilliant-cut diamonds, forming a luminous frame that enhances the watch's presence on the wrist. The 28 mm Oyster case, crafted in 18K yellow gold, features a monobloc middle case, screw-down case back, and Twinlock crown, ensuring water resistance to approximately 100 meters. A scratch-resistant sapphire crystal with Cyclops lens magnifies the date display for enhanced readability. At the heart of the watch is the Rolex manufacture Calibre 2236, a self-winding mechanical movement engineered for precision and reliability. Certified to an accuracy of -2/+2 seconds per day after casing, it features a Syloxi silicon hairspring for enhanced stability and resistance to magnetic fields, along with Paraflex shock absorbers. The movement delivers a power reserve of approximately 55 hours and includes instantaneous date change and stop-seconds functionality for precise time setting. Completing the timepiece is the prestigious President bracelet in solid 18K yellow gold, distinguished by its semi-circular three-piece links and seamless integration with the case. Secured by a concealed Crownclasp, it offers both exceptional comfort and a refined, uninterrupted aesthetic. Presented in unworn condition and accompanied by its original box and papers, this Rolex Lady-Datejust Ref. 279138RBR is a brilliant statement of sophistication and craftsmanship, a timeless piece designed to captivate and endure. Auction Note: The buyer of this lot will receive an appreciation letter from Prince Lorenzo de' Medici for participating in his family's auction. PLEASE NOTE: THIS WATCH IS LOCKED IN THE FAMILY’S VAULT OVERSEAS AND WILL BE SHIPPED TO THE WINNING BIDDER AFTER THE AUCTION. SHIPPING IS FULLY INSURED. PLEASE ALLOW 7-10 DAYS FOR SHIPPING. Opportunities to acquire a timepiece of this caliber within the United States are exceedingly rare, as many examples of comparable significance remain tightly held in private international collections. This offering represents an exceptional moment for discerning horology enthusiasts and serious investors alike to secure a watch of remarkable rarity, provenance, and enduring value.