Great Britain 1841 1d red brown Plate 10, SG7 South Arabian Federation stamps Very fine and quite possibly

Very fine and quite possibly unique

neatly cancelled by "19" numeral of Port Arthur

A very fine mint four margin vertical block of six lettered GJ-IK

These “head against foot” stamps are among philately’s most renowned errors

Accompanied by a 2002 Brandon Certificate of Authenticity

Great Britain 1841 1d red brown Plate 10, SG7 South Arabian Federation stamps Very fine and quite possiblyExhibition quality block of the highest pedigree Great Britain 1841 1d red brown Plate 10, SG7. A superb unused, with original gum, four margin right hand marginal block of sixteen lettered 'II LL', with full deckle edge selvedge and sheet marginal inscription. A magnificent exhibition quality block of the highest pedigree, lightly mounted on four stamps only. GB Specialised Catalogue No: AS69. Accompanied with a 2013 British Philatelic Association