Clearly a contrived philatelic item - with scarce and superb examples of the Field Post Office HM datestamp. 

Embossed Halfpenny cover uprated with 1/2d cut out from a stationary card addressed in pencil headed ON ACTIVE SERVICE, to:

Captain W. R. Gatt RFA

c/o Roy Malta Artillery

Alexandria 

(signed WR Gatt to base)

Cancelled with the d/r FIELD POST OFFICE H.M. datestamp 11 FE 18 - issued and used by HQ Desert Mounted Corps, this date at Khurbet Deiran in Palestine. 

Condition as shown: Excellent

ID: MT 30448