A rare Salvador Dalí painting, "Vecchio Sultano (1966)", is set to be auctioned off for up to £30,000 (€34,700) this October. The artwork, measuring 15-by-11 inches, features a regal sultan in a lavish turban inspired by The Arabian Nights. Authenticated by expert Nicolas Descharnes, the piece will be sold at Cheffins' Art and Design Sale in Cambridge.