Guinea
gui-20180808-s-003
page = 1
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Width: 33 mm
Height: 51 mm
Perforation: Perforated 13.50 x 13.25
Location: Ice Hockey Volume LI
Stamp ID = 9677
Stamp shows Nikita Gusev (On some French language stamps you might see the name spelled Goussev.)
From Linn's "Stamp Issuing Entities Of The World" page.
Guinea (1959-)
Stamp-issuing status: active; Population: 7,405,375. Republic in West Africa.