cover - the similar study, with U5 or cards (80), pieces (50) and stamps (105), for the single ring "FIELD P.O." and "ARMY P.O." d.s., the double ring "FIELD POST OFFICE B.O." (Base Office) types, with both small and large numerals, and the large rubber d.s. for "ARMY POST OFFICE/SMB" and an unusual "FIELD POST OFFICE/02". Also two official orders issued by the Army Post Office at Cape Town.