This large and colorful blade is reported to have been found on the Spiro Mounds site from Craig Mound. It measures 13 1/4 inches (33.6 cm) long. Perino describes these large bifaces as round-ended knives. He refers to Hamilton's description of them in 1952 in which they are called "elliptical knives" and Brown's 1976 description of them as "socio-technic sword-form bifaces." Perino describes them as long and parallel to slightly convex sided bifaces with rounded ends. Round-end bifaces are skillfully made with shallow controlled percussion flaking that merges at the midsection. Round-ended knives are reported to be found most often in mortuary associations. They were also used in ceremonial events as dance swords.