The John Wilks British East Africa: I.B.E.A. Co. Overprints on Great Britain: 1890 1/2a. on 1d., 1a. on 2d. and 4a. on 5d. mainly fine and fresh mint, the 1a. on 2d. with light horizontal bends but lower marginal and unmounted. S.G. 1-3, cat. £1,375. Photo. (Image1)

The John Wilks British East Africa: I.B.E.A. Co. Overprints on Great Britain: 1890 4a. on 5d. showing constant variety "B" over "S" in "EAST" from second column in setting, fine mint. S.G. 3 var., cat. £600+. (Image1)