Frame zither
Frame zither (Fr.: cithare à cadre; Ger.: Rahmenzither), zither having strings attached across an open frame (100). Hornborstel, E. M. von, and Sachs, Curt. “Classification of Musical Instruments,” translated by Anthony Baines and Klaus P. Wachsmann, in The Galpin Society Journal, Vol. 14. N.p., 1961.