cover 1878 (28 Nov.) U5 from Pretoria to Potchefstroom, bearing imperf. 3d. mauve on buff; 1879 U5 to Natal, bearing imperf. 3d. mauve on green used with Queen's Head 1d.; 1878 (Apr) U5 from Pretoria to Scotland, bearing imperf. 6d. blue on blue used in combination with Cape ½d. (4) and 4d.; most stamps and the first and last U5 with faults; a useful trio. S.G. 118, 119d, 121.