The Rolex Datejust 31, reference 278383RBR-0001, is cased in 31 mm Oystersteel, yellow gold and diamonds, with a white dial and a gem-set 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: 278383RBR-0001. Available through ELITA's private desk — verification review, discreet handling and storage. Price on request.