THREE ZAIRE KNIVES: an Idio throwing-knife, the blade with bevelled edge to one side, hide-bound grip; a Yakoma-Ngbandi knife, with copper and brass wire bound hilt and rounded rectangular hide sheath; and a Ngombe executioner's sword, each side of the blade with incised panel of vertical grooves and hatching, the grip bound with twisted brass wire, the double-flanged hilt with inset upholstery nails