British Offices in the Turkish Empire, 1884 (Apr. 26) Constantinople, Turkey to Galveston, Texas, cover bearing G.B. 2½d blue tied by "C" barred oval cancel, red "British Post Office Constantinople AP 26 84" cds, New York (5.12) and Galveston (5.16) backstamps, Very Fine. Estimate  $300 - 400. $0 (Image)