40004927, Marlborough, 54, Portrait (profile right): Augustus. Laureate head of Augustus., Unknown, Boardman, J., Scarisbrick, D., Wagner C., Zwierlein-Diehl, E: The Marlborough Gems (2009), Story-Maskelyne, M.H.: The Marlborough Gems (1870), M133-1922, Cameo, Amethystine chalcedony, 16th cent.