133423 1858 2D BLUE PLATE NINE ERROR IMPERFORATE (SG45a) REJOINED HORIZONTAL PAIR LETTERED SK SL (CATALOGUE £20,000).

1858 2D BLUE PLATE NINE ERROR IMPERFORATE (SG45a) REJOINED HORIZONTAL PAIR LETTERED SK SL (CATALOGUE £20,000). A good used rejoined horizontal pair 1858 2d blue plate nine ERROR IMPERFORATE (SG45a) lettered SK SL, SK just clear at upper left, SL four close but fine margins but margins between stamps are ragged and into SE square of stamp lettered SK. Cancelled several strikes of the Scottish '163' numeral of Greenock. A major line engraved rarity with only seven examples recorded lettered RC, RF, RJ, RK (National Postal Museum), this rejoined pair lettered SK-SL and EK, all cancelled in Greenock (Osborne illustrates 'RC' and 'RJ'). (Ref 133423).