40004646, Marlborough, 102, Bust of a wreathed woman with long ringlets. Taken to be an incunabulum of an Italian 15th-century engraver., Walters Art Museum, Baltimore, Boardman, J., Scarisbrick, D., Wagner C., Zwierlein-Diehl, E: The Marlborough Gems (2009), Story-Maskelyne, M.H.: The Marlborough Gems (1870), 42.1222, Cameo, Onyx

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