Lot 70 : General - Imperial AirwaysGeneral - Imperial Airways : CAPE TOWN-LONDON 1ST REGULAR RETURN SERVICE Bulawayo-Broken Hill, 1d & 4d of S Rhodesia, tied with Bulawayo 28 Jan 32 cds cancels one clear of the stamps. On plain cover. Air Mail label bottom left. First Official Air Mail cachet. Typed 'By First Air Mail Southern Rhodesia to Northern Rhodesia Imperial Airways' Addressed to Broken Hill. On the reverse Broken Hill 4 Feb 32 receiving. Very fine clean cover.