One day, more than twenty years ago, Zdenka Volavka found a lost treasure: the investiture regalia of the African kingdom of Ngoyo, dating from the Iron Age of the second millennium. The plaited copper crown or mpu, turned upside-down and filled with a jumble of metal objects, was on display in the MusTe de l'Homme in Paris, ignominiously labelled as a 'fishing basket.' These objects became the focus of Volavka's research in her remaining years, and form the subject of her book.

Combining extensive field work with ethnographic, historical, scientific, and linguistic analysis, Volavka...