細節
cover 1910 (25 Feb.) mourning envelope from London to Khartoum, bearing ½d. and 1d. (2), showing fine bi-lingual "RETURN TO SENDER" oval d.s. in red (5.6) with, on reverse, framed "UNCLAIMED", "RETURNED LETTER OFFICE/KHARTOUM" c.d.s. and Shellal-Halfa T.P.O. c.d.s.; minor corner faults though a most attractive cover. Photo