cover 1891 (2 Mar.), cover from Mombasa to London, bearing "½ Annas" on 2 annas, initialled "A,B,", from the foot of the sheet, tied by "MOMBASA/A/MR 2/91" single circle datestamp; cover somewhat creased and with 4a. stamp removed, backstamped London upon arrival; rare. S.G. 23a, £950. Photo