Lot Essay
The inscription SKYL indicates the signature of the Roman Period gem engraver Skylax. This is likely one of numerous copies of a seventeenth century amethyst ring stone with a bearded mask of Pan and a forged Skylax signature, once in the collection of Baron Stosch and the Duc de Blacas, now in the British Museum. For a similar example and an analysis of the type and related literature, see no. 52 in Spier, A Catalogue of the Calouste Gulbenkian Collection of Gems.