40004558, Marlborough, 684, A Nereid, half-naked with dress flying over her head, seated on the foreparts of two dolphins facing in opposite directions, holding the bridle of a hippocamp. In the background, a spear. Said by the Duke to be by Natter., Unknown, Boardman, J., Scarisbrick, D., Wagner C., Zwierlein-Diehl, E: The Marlborough Gems (2009), Story-Maskelyne, M.H.: The Marlborough Gems (1870), no. 684, Amethyst

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