40005079, Marlborough, 755, Portrait (profile right): Antinous. Head of Antinous., Unknown, Boardman, J., Scarisbrick, D., Wagner C., Zwierlein-Diehl, E: The Marlborough Gems (2009), Story-Maskelyne, M.H.: The Marlborough Gems (1870), no. 755, Chalcedony

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