Ethnographica specialist Zemanek-Münster in Würzburg is holding its 100th auction on April 15 and has taken in some impressive pieces for the landmark.
Among them is a 19in (48cm) high royal caryatid lupona stool from the Luba people of the Congo. Such stools were used exclusively by the rulers of the Luba and were symbols of their power. They had a central function at the investiture of a new ruler and were also thought to contain the spirits of previous rulers.