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

1854, 1 d. red, plate R3, die I, alphabet II, Perf. 16, vertical strip of four and vertical pair, used on Registered cover in combination with 1855 1 d. red, die II, Perf. 14, from Enstone to Guernsey, dated 19 June 1855, tied by "273" English numeral, the six perf. 16 paying the registration fee, the perf. 14 the 1d postage rate; combinations of perforation gauge 16 and 14 during the transitional period from January 1855 to August 1855 are scarce, this registered cover is the only example recorded in the Mixed-Franking Covers book of this type. rnReference: "Mixed-franking Covers", by R.C. Simpson & K.A. Louis, MJ Publications, 2020, illustrated page 83 and recorded on page 99. Classified as a "Gold Standard" cover.