If you go to this Pinterest site you’ll see over a 100 different Bozo masks from Mali and Burkina Fasso that have been worn in culture. You can still find these colorful artifacts selling for a few hundred dollars. An authentic mask from a more famous tribe in West Africa will cost many thousands. Those brown, old looking masks you see all over the place almost always are fake reproductions.
Wikipedia says: The Bozo are a West African ethnic group located predominantly along the Niger River in Mali. The name Bozo is thought to derive from Bambara bo-so “straw house”; the people accept it as referring to the whole of the ethnic group but use more specific clan names. such as Sorogoye, Hain, and Tieye. They are occasionally referred to as the “masters of the river.”