cover 1901 (Feb.) envelope ex the "Thorp" correspondence to Cheshire, bearing 1882-88 1a. pair (one with small corner defect) clearly tied by "B" in bars and showing, on reverse, "ZAILA/B.O./SOMALI COAST" c.d.s. overstruck by Aden transit d.s. (24.2); the envelope with some light overall discoloration not significantly affecting appearance. Rare. Photo