Glass astragal (knucklebone), Hellenistic, 3rd?2nd century B.C., Greek, Glass; cast in a two-part mold, Other: 3/4 x 3/8 x 7/16 in. (1.9 x 1 x 1.1 cm), Glass, Translucent pale blue green., Shaped like the knucklebone of a sheep or goat. Solid with mo