cover 1919-47 covers (23), a selection including forerunners (3, one with Kalkfontein North Camel Depot cachet), 1923-26 overprints (10 with values to 6d., three registered and one to Switzerland with Postage Dues) and later issues (10, mostly carried by air and including bearing 1931 Air 3d. and 10d. pairs). Generally good to fine.