Sierra Leone
sie-20180530-g-002
page = 1

Stamp picture
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First day of issue: May 30, 2018
Width: 122 mm
Height: 96 mm
Perforation: Imperforate
Location: Ice Hockey Volume LXXIX
Stamp ID = 5644

Collective sheet shows Danny aus den Birken
Collective sheet shows Nikita Gusev (On some French language stamps you might see the name spelled Goussev.)
Collective sheet shows Maxim Noreau
Collective sheet shows Slava Voynov

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

Sierra Leone (1859-)
Stamp-issuing status: active; Population: 4,891,546 (1997 estimate). A republic in west Africa. The coastal area was occupied by Great Britain after 1791, the hinterland coming under British protection in 1896.