Auction: 140 - July Philatelic Collector's Series Sale
Lot: 508
#304P, 1951 4c Mackenzie King, large unhardened die proof on india (66x74mm) mounted on card (139x98mm) in rose carmine, wonderfully scarce and fresh, very fine; one of a mere two believed to exist according to BNA Proofs - Proofs & Essays of Canada and its Provinces.
Sold for
$700
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