A "brick" baked from camwood powder. A rare example of "primitive money". Camwood powder mixed with palm-oil was also used by the Kuba to smear onto their bodies and was stored in elaborately designed boxes (see shikra cat.no. 14-03).
Lit.: "Negerkunst und Negerkünstler" - Hans Himmelheber -1960. Page 360, Ill. 287
Afrika - Eine Einführung - Wegweiser zur Völkerkunde, Heft 22 - Wulf Lohse - Hamburgisches Museum für Volkerkunde - Page 68