O 46/21 DE 03" bridge type c.d.s. (Upper Sheikh) and showing, on reverse, Aden transit c.d.s. (24/12). Very scarce. Photo" /> cover 1903 (21 Dec.) envelope to Essex, England, bearing 1a. carmine tied by a good strike of the "F.P.O. N<V>O 46/21 DE 03" bridge type c.d.s. (Upper Sheikh) and showing, on reverse, Aden transit c.d.s. (24/12). Very scarce. Photo | Christie's