The Republic of Cameroon uses the Central African CFA Franc as its currency; it is the common currency of six independent states in central Africa: Cameroon, Central African Republic, Chad, Republic of the Congo, Equatorial Guinea and Gabon. The CFA Franc has both common and national issues. All common circulating coins are issued under the authority of CEMAC ("Communauté Économique et Monétaire de l'Afrique Centrale" - Economic and Monetary Community of Central Africa) and have no issuing country. Separately, each member country can strike coins bearing its national symbols; these coins are legal tender in the other members of the bloc too.
Cameroon has authorised some foreign mints to strike coins under its issuing authority for investment or for collector's purposes. These are usually dedicated to historical or general popular culture themes not related to the country itself. Many of them are in standard bullion sizes, such as the internationally popular one troy ounce (1oz) of silver.
This coin is part of the Cameroon Mandrill series of bullion coins by the Scottsdale Mint.
The Mint says about it:
Scottsdale Mint is pleased to announce its latest release from the Republic of Cameroon - The 2021 Cameroon Mandrill.
The mandrill is a primate of the Old World monkey family, and the largest of all monkeys. Mandrills are native to southern Cameroon and other parts of Equatorial Africa, living mostly in rainforests in large groups. Perhaps the most distinctive aspect of the mandrill is its bright red and blue facial coloration, which is not seen anywhere else in the mammalian class. | 
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