cover 1876 6p. red, a partially inked example (small hole) affixed on 1a. brown on blue stationery XU5, both cancelled "1-6/7" in bars and showing, on reverse, Kahuta c.d.s. for 25 July 1878, bi-lingual intaglio seal h.s. and three transit c.d.s. Believed to be the earliest known date of use for this stamp. Ex Masson and Wilson. Photo.