Great Britain 1841 1d red brown Plate 132 Imprimatur, SG8Great Britain 1841 1d red brown Plate 132 Imprimatur, SG8. A superb example with four clear to large margins, lettered 'PF'. Very scarce printing from the first approved printing sheet. One of only 21 possible examples from this printing plate, many of which reside in institutional collections. Plate 132 was one of the final plates used in the line engraved era before the change to perforated stamps in 1854. Imprimaturs are of immense historical and