cover 4d. pale milky blue, single, small margins all round except at right corner where just touched, tied by neat triangular cancellation to 1861 (17 July) mourning U5 from Mowbray to Cape Town, red oval backstamps; the stamp has one or two very minor imperfections. Scarce. R.P.S. Certificate (1970, as pale bright blue). S.G. 14. Photo