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Auction: 166 - The Philatelic Collectors' Series Sale
Lot: 217

Unitrade #3Pi, 1851 12d Black, plate proof on India, overprinted "SPECIMEN." vertically in carmine, an absolutely spectacular left sheet-margin block of 32 (8x4), with ample to mostly large margins on the other three sides, two top stamp with a thinned spot and a few with just a hint of toning, otherwise very fine; an eye-arresting showpiece and most likely the largest surviving multiple of this ever popular proof; Cat. value $80,000

Sold for
$24,000