A short, relatively wide bowl with an almost rectangular opening outline and a slightly rounded base (type E). Steep longitudinal and sloping transverse walls on the inside. There are nine string guide perforations on each of the protruding narrow sides. The string cord [is] only preserved in fragments. One end is tied to a small crosspiece below an outer perforation. Above one of four bottom perforations [is] a small metal plate lying on the bottom of the bowl. A piece of wire anchored in the walls and hung with horn rings and small sheet metal cylinders crosses the width of the bowl opening halfway up. Incised patterns [are] on the underside of the bowl. "Schabruma". from Ulrich Wegner: Afrikanische Saiteninstrumente, Staatliche Museen Berlin - SPK, 1984 (Appendix Object Catalogue)