This is one of four reliefs with two-figure compositions depicting a combat between two warriors, likely a Gaul and a Greek. Several reliefs probably decorated a large funerary jar. They rested on a shelf-like projection from the body of the vase and were secured by dowels through the holes in the plaque. In this episode, one rider has fallen creating a contrast between the rearing horse and the three enmeshed figures behind him.
Richter, Gisela M. A. 1913. "Department of Classical Art: The Accessions of 1912--Sculptures, Terracottas, and Miscellaneous Objects." Bulletin of the Metropolitan Museum of Art, 8 (8): pp. 175-6.
Richter, Gisela M. A. 1927. Handbook of the Classical Collection. p. 206, New York: The Metropolitan Museum of Art.
Bienkowski, Piotr. 1928. "Les Celtes dans les art mineurs gréco-romaines, avec des recherchesiconographiques sur quelques autres peuples barbares." Ph.D. Diss. pp. 91ff., figs. 138c, 140. Imprimerie de l'Université des Jagellons à Cracovie.
Oliver, Andrew Jr. 1968. The Reconstruction of Two Apulian Tomb Groups, Beiheft zur Halbjahresschrift Antike Kunst, Vol. 5. Bern: A. Francke.