cover 1854 (9 Jan.) XU5 with printed inscription at upper left "Do not Post Letters or Papers on Saturday, to be delivered on the Lord's Day. Read Tract, 'Are they not Men?' a Plea for Country Letter Carriers; to be had at 82, Wood-street, Cheapside, London, E.C.", registered to Switzerland, bearing 1862-64 6d. pair tied by Registered Letter Branch "15" numerals, showing red "(crown)/REGISTERED" and oval d.s., various transit amd arrival backstamps, fine and attractive. Photo