Canada
can-19460000-b-001
page = 1
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Width: 160 mm
Height: 90 mm
Location: Box 2006
Stamp ID = 4402
The ice hockey players are under the postmark.
From Linn's "Stamp Issuing Entities Of The World" page
Canada (1851-)
Stamp-issuing status: active; Population: 29,123,194. An independent state within the British Commonwealth, occupying the northern part of North America.