Lot Essay
Cf. Furtwängler, Antiken Gemmen, pl. XXXVI, no. 33 and pl. XLI, nos. 26, 27 and 29; Richter, Gems of the Romans, pp. 45 and 148, nos. 178-180 and 693; M. Henig, Corpus, p. 102, no. 178; Maaskant-Kleibrink, Royal Coin Cabinet, pp. 185 and 210, nos. 393, 484 and 485; and Tondo and Vanni, Le Gemme, p. 169, no. 43.