VERY FINE AND CHOICE. A REMARKABLE MINT NEVER-HINGED BOTTOM CORNER MARGIN POSITION BLOCK OF SIX OF THE FAMOUS CANADA ST. LAWRENCE SEAWAY INVERT. THIS IS ONE OF THE LARGEST RECORDED MULTIPLES AVAILABLE TO COLLECTORS. A BLOCK OF FOUR FROM THE ADJOINING POSITION IS ALSO KNOWN, WHICH IF PUT TOGETHER WOULD MAKE THIS PART OF A BLOCK OF TEN.

The St. Lawrence Seaway provided for passage from the Atlantic Ocean to the Great Lakes. It was a collaboration between the United States and Canada. 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. Both stamps have the same basic design, except the Canada stamp has bilingual text at top. The invert is only known on the Canadian stamp.

Charles J. G. Verge provides a census of multiples in his book on the Seaway Issues. The largest recorded multiples are:

1) Pane of 50, owned by the Library and Archives of Canada and so unavailable to collectors.

2) Block of ten, owned by the Library and Archives of Canada and so unavailable to collectors.

3) Block of ten, from the top two rows of the plate, from the Brigham Collection.

4) The block of six offered here, from the bottom two rows of the plate. The Verge book also illustrates a block of four (ex Balner), which originally formed a block of ten with the block offered here.

5) Block of six, no selvage.

Unitrade C$75,000.00 as singles. Scott Retail as singles

Image Magnifier / Download

Power Search for Comparables