40005030, Marlborough, 101, Portrait (profile left): Julia Mammaea (?). Bust of 'Julia Mammaea?'., Unknown, Boardman, J., Scarisbrick, D., Wagner C., Zwierlein-Diehl, E: The Marlborough Gems (2009), Story-Maskelyne, M.H.: The Marlborough Gems (1870), no. 101, Cameo, Sardonyx