X-ray detail of embedded metal bow and arrow, nails, shotgun cartridges, etc. Unidentified Mau artist. Koma Ba Mask, late 19th-early 20th century. Wood, cowrie shells, metal, feathers, horns, leather, fiber, sacrificial materials, 41 x 11 x 11 in. (104.1 x 27.9 x 27.9 cm). Brooklyn Museum, Gift of Marcia and John Friede, 76.20.2.