Most expensive glass sold at auction
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The auction record is £;520,000 ($1,078,480) for a Roman glass cage-cup of c.AD 300, known as the `Constable-Maxwell cage-cup’, measuring 17 cm (7 in) in diameter and 10 cm (4 in) in height, sold at Sotheby’s, London, UK on 4 June 1979 to Robin Symes (UK) of the British Rail Pension Fund. It is one of only seven more or less complete examples recorded and is the only remaining example known to still be in private hands. <br /> The cage-cup is so called because the body and base of the vessel are completely surrounded by a delicate network, or `cage’ of glass. It is carved from a single thick blank of colourless glass, demonstrating a level of workmanship of unparalleled nature. Cage cups, or `vasa diatreta’ as they were called in the 19th Century, were owned by the very wealthiest of Roman society.
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History of Auctioneering