The Rolex Datejust 31, reference 278271-0015, is cased in 31 mm Oystersteel and Everose gold, with a silver dial set with diamonds and a fluted bezel, on an Oyster 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: 278271-0015. Available through ELITA's private desk — verification review, discreet handling and storage. Price on request.