A Royal Flying Corps D.S.O. group of four awarded to Lieutenant-Colonel G.P. Grenfell, Royal Air Force

DISTINGUISHED SERVICE ORDER, G.V.R.; 1914-15 STAR (2.Lieut., R.F.C.); BRITISH WAR AND VICTORY MEDALS (Lt. Col., R.A.F.) mounted on original wearing bar, good very fine (4)

D.S.O., London Gazette, 1 January, 1918, Captain (T/Major) George Pascoe Grenfell, Royal Flying Corps, Special Reserve.

Sold with some research.