Askphil : GRI Long Island: inscribed local issue for island of Long Island, Gulf of Smyrna.
GRI = G.R.I.: Georgius Rex Imperator (George, King & Emperor) 1: New Britain overprint on stamps of German New Guinea,
Marshall Islands, 1914. 2: overprint on stamps of German Samoa, for Samoa under Britain, 1914.
Image source:
"War stamps of the Allies"
undated Circa 1917?
War stamps of the Allies, 1914-1920 : an historical record
by Armstrong, Douglas B; Greenwood, Charles H
Published 1920
Topics World War, 1914-1918 on postage stamps, Stamp collecting
http://www.filatelia.fi/articles/neareast.html