"The 3in x 6in (8cm x 15cm) knife was excavated from the Mediterranean area more than 20 years ago and was obtained by the museum in 1991. The unique item is among dozens of artefacts exhibited in a newly refurbished Greek and Roman antiquities gallery at the Fitzwilliam Museum, in Cambridge. Experts believe it may have been carried by a wealthy traveller, who will have had the item custom made.
A spokesman said: 'This was probably made between AD 200 and AD 300, when the Roman empire was a great imperial power."
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