Auction 309-320 - Great Britain 1840–1841 Europe & Overseas - Day 5

1854/1856, Group of four covers franked with 2 d. blue, plate 4, perf. 16, comprising three single frankings and one in combination with 6 d. lilac on a registered cover, this being the only recorded example of a perforation mixed-franking involving these stamps, also noted a second day of recorded use, dated 23 Febraury 1854, sent from Sheffield to Blackheath and another example used within the first month of issue, some faults and slightly mixed condition, although very scarce lot; there are only three covers recorded used in the first month of use.rn(1857 2 d. blue in combination with 6 d. lilac): Reference: "Mixed-franking Covers", by R.C. Simpson & K.A. Louis, MJ Publications, 2020, illustrated page 93 and recorded on page 102.