Niger
nig-20180424-s-005
page = 1

Stamp picture
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First day of issue: April 24, 2018
Occasion: 2018 Winter Olympics,2018,Pyeongchang,Korea, South
Width: 38 mm
Height: 52 mm
Perforation: Perforated 13.50 x 13.25
Location: Ice Hockey Volume LXX
Stamp ID = 5665

Stamp shows Ilya Kovalchuk (On some French language stamps you might see the name spelled Kovaltchouk.)

From Linn's "Stamp Issuing Entities Of The World" page.

Niger (1921-45, 1959-)
Stamp-issuing status: active; Population: 9,388,859 (1997). A republic in northern Africa, directly north of Nigeria.