Neck amphora (with twisted handles). A) Apollo and Artemis. Artemis at left, Apollo at right, an altar, with volutes, between them; both standing. Artemis, holding bow and arrows in left hand, seems to be pouring from an oinochoe onto the altar. Apollo, holding a kithara with his left hand, pours a libation from a phiale onto the altar. B) Dionysos and a maenad. Maenad at left, Dionysos at right. Maenad wears leopard's skin, holds oinochoe in right hand and a snake in the other. Dionysos faces her, standing, thyrsus in left hand and kantharos in right. Intact.
The Perseus Project. http://www.perseus.tufts.edu/hopper/artifactBrowser?object=Vase&field=Collection&value=University+Museum%2C+University+of+Pennsylvania.
Farnsworth, Marie, and Harriet R. Wisely. "Fifth Century Intentional Red Glaze." American Journal of Archaeology 62, no. 2. (1958): 165-173. See: pl. 36