40004937, Marlborough, 373, Facing portraits (profile right): Augustus (?). Portrait (profile left): Livia. Bust of Livia, laureate, one shoulder bared, with a bust of laurel-crowned Augustus or Drusus., Museum of Fine Arts, Boston, Boardman, J., Scarisbrick, D., Wagner C., Zwierlein-Diehl, E: The Marlborough Gems (2009), Story-Maskelyne, M.H.: The Marlborough Gems (1870), 99.109, Cameo, Green turquoise, 1st cent. AD