1913, Camel Post, 1m x2, 5m and 1pi x2, five stamps used on registered cover from Khartoum to Switzerland, crayon markings and arrival ds on reverse, VF (Image)

1940, Camel Post, 3p blue and red brown, printed on chalk-surfaced paper, watermark Multiple S.G., broken left frame and top left corner variety, full OG, LH, VF, SG #44b var (Image)

Air Post stamps. 1935, General Gordon Statue, black surcharge 2½pi on 3m brown and green, left sheet margin horizontal pair, left stamp with broken ''u'' in ''Sudan'' variety, full OG, NH, VF, SG #69, var (Image)