1907-12 15c on 1 1/2d pale dull purple and green with “1” of “15” omitted on two mint h.r. examples in reconstructed left marginal block of four made of two horizontal pairs, hinge reinforcement between stamp and marin on both, with lower pair showing wmk “E” of “POSTAGE” in margin meaning these pairs come from row 2 and 3 from the lower pane of the unique sheet, a major rarity of Morocco Agencies with only nine examples discovered; cert. BPA (1986) for top pair; top pair ex Ferrari, Sampson and Rossi, lower pair ex William Fraser (S.G. £14’000+).

Note: Includes letter from the Keeper of the Royal Philatelic Collection which says that the example in their collection is from the row below with wmk “G”.