40004691, Marlborough, 612, Hermes, as the last. Ground line. Said in Tassie to be by Burch. Marlborough xv (n.), another copy once in the Marlborough collection., Unknown, Boardman, J., Scarisbrick, D., Wagner C., Zwierlein-Diehl, E: The Marlborough Gems (2009), Story-Maskelyne, M.H.: The Marlborough Gems (1870), no. 612, Amethyst

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