Bank of Sudan, Fifty Piastres (7), 1970, B/11 prefix, 1973, B/20 prefix, 1974, B/28 prefix, 1975, B/31 prefix, 1978 (2), B/39 and B/46 prefixes, 1980, B53 prefix (Pick 12a, 12b, 12c) [7]. First very fine, others about uncirculated and better £100-150