Ceremonial Knife Central Africa; Democratic Republic of the Congo; possibly Yanzi, Nguli, Lwer, or Dzing peoples Iron and Wood 17 11/16 x 6 3/4 x 1 7/16 ins. (44.9 x 17.1 x 3.7 cm) Prestige knives of this type can be attributed to the Dzing or their neighbors the Yanzi, Lwer, and Ngul of the Bandundu Province.  The men of power and authority carried them in public gatherings as emblems of rank.