Lot 54 : General - Imperial AirwaysGeneral - Imperial Airways : CAPE TOWN-LONDON 1ST REGULAR RETURN SERVICE Kimberley-Broken Hill, 3d 1d & 1d Official of SWA, tied with Lugpos Mariental Air Mail cachet with Mariental 26 Jan 32 cds cancel clear of stamps (Superb strikes). On Robertson illust cover. Addressed to Broken Hill. Feeder service from SWA to Kimberley. On the reverse Broken Hill 4 Feb 32 receiving. Display quality cover.