Canada 1959 Seaway Blue Center Inverted, Scott 387a; SG 513a; Unitrade C$ 12,500
Fresh example of this 20th century rarity, well centered between perforations, clean Very Fine stamp. 2019 Greene Certificate of Authenticity.
The St. Lawrence Seaway, a collaboration between the United States and Canada, provided passage from the Atlantic Ocean to the Great Lakes. The Seaway was opened in 1959 with a ceremony led by Queen Elizabeth II and President Eisenhower. Both the United States and Canada issued stamps to commemorate the event.
C Robert J. Barish Collection of Canadian Postage Stamps
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