Cape of Good Hope 1865 De La Rue Steel Blue Triangle on Letter

1865 KING WILLIAMS TOWN to Grahamstown: Neat small format envelope from King Williams Town (nice oval DE 17 on reverse) to "Miss Tudhope, Hill Street, Grahamstown" franked fine full-margined De La Rue 4d STEEL BLUE (SG 19c) triangular tied by triangular defacer. An attractive example of a rare stamp on cover. The stamp shows Stevenson's variety XXXII (line in "P" of "Pence").