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Auction: 140 - July Philatelic Collector's Series Sale
Lot: 401

#6P5, 5c Light blue, plate proof on wove, block of four, positions 65-66/75-76 penciled on back, large even margins all around, quite fresh, extremely fine and a scarce proof block; photocopy of a 1976 PF certificate for the original sheet of 400.

Sold for
$260