Lot 422
Canada, 1959, 5¢ St. Lawrence Seaway, center inverted (387a), tied on cover to the United States by wavy line cancel, "Ottawa Ontario Canada Sep 8, 1959", stamp is very well centered and fresh with a small tear at lower right, basically unnoticeable, fresh Very Fine usage. Unitrade C$25,000 ($20,000).
ONLY 16 INVERTS ARE BELIEVED TO EXIST ON COVER, AND THIS IS THE ONLY CROSS-BORDER USAGE. AN IMPORTANT 20TH CENTURY RARITY.
Expertization: with 2010 Greene Foundation certificate.
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| Realized $5,750 |
