Canada
can-19060000-p-001
page = 1
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Width: 138 mm
Height: 88 mm
Location: Ice Hockey Volume VI
Stamp ID = 8530
Many of the early Canadian postcards were printed by Valentine & Sons.
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.