From the index card: "A leather membrane is sewn onto one side of a roughly pear-shaped wooden frame. Wooden "humps" are inserted between the outside of the frame and the leather cover. Inside is an iron cross held by humps. Iron rod rattles and two bells without clappers are attached to the inner edge. The inside of the membrane is painted red (horse and rider, people, double oval)." Later published in : Oppitz, Michael, Die Trommeln der Schamanen, Zurich ( Völkerkundemuseum der Universität), 2007, p. 26.