בידספיריט | British WWI military mail in

British WWI military mail in Egypt: 28 OC 1919 stampless (OAS) YMCA stationary cv (FB-YMC1) ex APO SZ 10 (CAIRO) to DEREHAM, tied by rare Proud-D1/state4 pmk 6 weeks before Proud's EKD of use (per Proud in use only 3 days, 16-18 Dec ); torn open at top, complete.