Iris pouring a libation onto a blood-stained mound altar. The winged goddess stands in profile to the right, carrying a kerykeion in her left hand and an oinochoe in her right. She wears a chiton, himation, and headband; her hair is in a kekryphalos. A serpent bracelet adorns her right wrist. Himation and oinochoe are both rendered in black silhouette. A nonsense inscription runs from the goddess's chin, past her right hand, and down toward the altar: STOS(P)OSI.
The mouth, neck, handle, and body below the picture are black. The shoulder, side of the foot and inside of the handle are reserved. White ground for the picture zone. On the outer edge of the lip, a single band of red; enclosed tongues at the base of the neck. On the shoulder, five black, continuously linked palmettes: a central group of three framed by two singular ones, all upright save the central one which is pendant. On the body, at the join with the shoulder, running key pattern to the right.