The John Wilks British East Africa: 1895-96 'On India' Overprints: 1a. plum, variety "Brit1sh", mint, fine and fresh. Ex Wood, Minns and Krieger. R.P.S. certificate (1973) S.G. 50a, cat. £18,000. The error occurred in the outer left column on the four values of the first printing, as well as the early printing of the 21/2a., and was corrected before the second printing. The mint example on the 1a. is unique in private hands, the only other recorded unused example being in the Royal Philatelic Collection. Photo. (Image1)