Canada
can-20100212-k-008
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Stamp picture
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First day of issue: February 12, 2010
Occasion: 2010 Winter Olympics,2010,Vancouver,Canada
Width: 165 mm
Height: 93 mm
Location: Ice Hockey Volume XVIII
Stamp ID = 5531

Cachet shows Alexander Ovechkin (On some French language stamps you might see the name spelled Aleksandr Ovetchkine.)
Cachet maker is Patrick Chalifoux.
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.