Description
1850 1D PL.98 ARCHER EXPERIMENTAL PERFORATION (SG16b) EXCEPTIONAL MINT BLOCK OF FOUR. An exceptional unused block of four 1850 1d pl.98 Archer Experimental Perforation (SG16b) lettered MA MB NA NB with superb colour, superb original gum on reverse. Block shows unusual but consistent perforations at lower right of both stamps. A quite superb block of exhibition quality. (Ref 141033).
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