Burkina Faso
bur-20230000-s-001
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Occasion: 2022 Winter Olympics,2022,Beijing,China
Width: 43 mm
Height: 33 mm
Perforation: Perforated 14.00 x 13.75
Location: Ice Hockey Volume VI
Stamp ID = 9212
This is definitely not an official stamp. From the Burkina Faso post office web site (La Poste (Burkina Faso) here is an English translation from their philately page.
Given that the stock of postage stamps in the vault remains high compared to the annual consumption level, the budget did not provide for an issue for the year 2023 except on an exceptional basis.
From Linn's "Stamp Issuing Entities Of The World" page.
Burkina Faso (1984-)
Stamp-issuing status: active; Population: 10,891,159. A poor, landlocked republic in the Savannah region of West Africa, formerly the French colony of Upper Volta, bounded by the states of Mali, Niger, Benin, Togo, Ghana and Ivory Coast. Following a 1983 coup d'etat, Upper Volta's name was changed to Burkina Faso on Aug. 4, 1984. The name is a transliteration of indigenous words meaning "country of incorruptible men." The first stamps bearing the new name were in an airmail set issued on May 23, 1984.