NINE AFRICAN WEAPONS: an Ngombe 'executioner's sword'; a Yanzi knife with broad blade; four Kuba knives, one with pierced blade another with brass blade; a Mongo knife and sheath, the sheath and broad butt with inset upholstery nails; an Ntomba knife with pierced oval blade; a Cameroon knife and sheath, rattan loops to each side of the hide-bound sheath and a Matakam throwing-knife with double curved blade and skin-bound grip