Plastic adjuncts had been part of the decoration of Attic vases from the Geometric period on.The execution of the decoration in applied, low relief was a short-lived phenomenon that lasted from the second half of the fourth into the third century B.C. The fragility of the relief accounts for the often poor condition of the objects. This one had extensive remains of gilding and blue color.
Richter, Gisela M. A. 1945. "Greek Painting: Four Newly Acquired Vases." Bulletin of the Metropolitan Museum of Art, 3(7): pp. 170–71.
Richter, Gisela M. A. 1953. Handbook of the Greek Collection. pp. 116, 255, pl. 95f, Cambridge, Mass.: Harvard University Press.