British East Africa, 1896, 1r gray With Overprint Varieties on Cover. Stamp shows the three varieties in the overprint: inverted "s", dropped "h" of British, and broken top of A in Africa; squared circle "Mombasa / A / JU 6 /96" ties stamp to cover, receiver with same date on reverse; certificate states the triple overprint variety occurs in position 60 in the setting of 120 subjects, only on late printings; scarce and attractive; with 2010 Sismondo certificate. SG No. 59 var. Scott No. 66 var.  Estimate $200 - 300. $0 (Image)