בידספיריט | British WWI military mail in

British WWI military mail in Egypt: 11 SP 1917 stampless OHMS stationary cv. ex APO SZ 17 (KANTARA) to Art. coy. HQ LONDON tied by Proud-D2/state2 pmk & ”ASSISTANT DIRECTOR OF LABOR KANTARA” cachet ( FB unlisted ); endorsed by officer & passed local censor; b/s 17 SP 1917 APO SZ 9 (DEIR EL BELAH) using undocumented single dateline SCDS ; torn open at top, slit at left, top left flap tip missing; vert fold.