11/1919 WWI Egypt British military cv w/APO SZ 10 pmk past latest known date use
British WWI-era military mail in Egypt: 17 NO 1919 stampless (OAS) civilian stationary cover from APO SZ 10 (CAIRO) to DEREHAM, tied by Proud-D8 postmark two months after Proud's last known date of use (9 SE 19); torn open at top, complete.