The relief appears to show a merchant receiving a delivery from a porter at right, who is carrying a jar over his shoulder. Other amphorae, with their mouths clearly sealed, are stacked in the corner at left.
Richter, Gisela M. A. 1926. "Recent Accessions of Classical Sculpture." Bulletin of the Metropolitan Museum of Art, 21(11): pp. 258, 260, fig. 4.
Weitzmann, Kurt. 1979. Age of Spirituality: Late Antique and Early Christian Art, Third to Seventh Century no. 257, pp. 280-81, New York: The Metropolitan Museum of Art.
Johnson, Hugh. 1985. "A Gift of the Gods." Wine: Celebration and Ceremony, Hugh Johnson, ed. p. 15, New York: Smithsonian Institution.