Victoria 2d. deep full blue imperf. plate 4 with 6d.embossed on entire from London 11-5-1854 to Amsterdam, a very rare combination on cover (early use embossed and very late use of 2d. imperf), combinations of the 2d. imperf with the embossed 6d. is the second rarest combination of all 1841 line engraved mixed frankings with 1847/54 embossed issue with less then twenty covers recorded to date ! Provenance : The Amsterdam archive