15c-90c 1869 Pictorial Inverts, Plate Proofs on Card (120aP4, 121aP4, 122aP4, 129aP4). Blocks of four with sheet margins, 15c bottom, 24c left, 30c and 90c top sheet margins, other sides large, bright colors

EXTREMELY FINE. ONE OF ONLY TWO RECORDED SETS OF BLOCKS OF FOUR OF THE 1869 PICTORIAL INVERT PLATE PROOFS. A PHENOMENAL RARITY -- ONE OF THE MOST DESIRABLE OF ALL 1869 PICTORIAL ISSUE PROOFS.

All examples of the 1869 Pictorial Invert proofs come from the sheets in the Earl of Crawford collection. Two sets of blocks of four are known to still survive intact, in addition to the unique imprint and plate number blocks of eight (which sold for $230,000 hammer in the 2009 Cunliffe sale).

Each block with 2001 P.S.E. certificate

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