Lot 50 : General - Imperial AirwaysGeneral - Imperial Airways : CAPE TOWN-LONDON 1ST REGULAR RETURN SERVICE Kimberley-Johannesburg, ½d joined pair 1d & 2d Officials of SWA, tied with Air Mail Windhoek-Kimberley 26 Jan 32 cds cancel. On Springbok illust cover. Windhoek 26 1 32 small cds cancel 23mm. Addressed to Upington. Feeder service from SWA to Kimberley. On the reverse Upington 27 Jan 32 receiving. Some tone spots around stamps.