7th-9th century AD. A purple glass vessel with globular body, trumpet-style neck and mouth and discoid foot to base, body decorated with three raised discs. Cf. Whitehouse, D., Sassanian and Post-Sassanian Glass in The Corning Museum of Glass, New York, 2005, for comparable examples and discussion; cf. A. Oliver Jr. et al., Ancient Glass, Pittsburgh, 1980, p.132, for comparable example and discussion.24.6 grams, 55mm (2 1/4"). From a London gentleman, formerly in a Swiss collection 1990s.