40004895, Marlborough, 454, Helmeted head of a bearded warrior in three-quarter front view, the edge of his shield decorated with a running horse., Unknown, Boardman, J., Scarisbrick, D., Wagner C., Zwierlein-Diehl, E: The Marlborough Gems (2009), Story-Maskelyne, M.H.: The Marlborough Gems (1870), no. 454, Agate

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