40005034, Marlborough, 461.2, Portrait (profile left): Julius Caesar. With lituus and star in the field, Unknown, Boardman, J., Scarisbrick, D., Wagner C., Zwierlein-Diehl, E: The Marlborough Gems (2009), Story-Maskelyne, M.H.: The Marlborough Gems (1870), no. 461, White onyx

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