Plaque from a Casket with a Dancing Woman, 4th?5th century, Made in Byzantine Egypt, Coptic, Bone with red polychromy, Overall: 4 1/8 x 2 1/16 x 3/16 in. (10.5 x 5.3 x 0.4 cm), Ivories-Bone, Bone plaques were used to decorate couches, chests, and oth