The Rolex Datejust 31, reference 278278-0009, is cased in 31 mm yellow gold, with a champagne-colour dial set with diamonds and a fluted bezel, on a President bracelet. It is powered by the automatic Calibre 2236 movement, with a 55-hour power reserve. Complications: Date display, Cyclops lens. Water-resistant to 100 m (330 ft). Maker: Rolex. Reference: 278278-0009. Available through ELITA's private desk — verification review, discreet handling and storage. Price on request.