בידספיריט | MEF British WWI military mail

MEF British WWI military mail in Egypt: 6 OC 1915 stampless OHMS stationary cv ex Royal Naval Armoured Car Division at Mustapha Camp via BAPO Z (ALEXANDRIA) to Fleet Paymaster LONDON, tied by BAPO Z pmk & rare FB-unlisted ”R.N.A.C.D. MUSTAPHA | ALEXANDRIA” violet oval cachet : RNACD was extension of Royal Navy's ”Armoured Car Section” of boilerplated vehicles, being UK's only mechanized land forces - this absorbed by the Army in Summer 1915 & incorporated into the Motor Branch of the Machine Gun Corps. This force in Egypt numbered about 30 men. Opened roughly at back, complete except top left corner tip; vert. fold. Rare unit mail.