A gold medallion of 9 solidi, issued under the reign of Roman emperor Constantine the Great, is up for auction at Bonhams.
The lot will headline a sale of coins and medals in Los Angeles on September 14, with a valuation of $200,000-250,000.
 Constantine the Great was a fourth century Roman emperor |
Produced between AD 307 and 337, the medal was given as a gift to either an important figure in Roman society or the head of another nation.
Bonhams comments: "The present lot appears to be related by subject to small group of gold medallions and coins that was discovered in the village of Helleville, near Cherbourg in Normandy, France in 1780."
Very few pieces from this hoard survive, as the majority were stolen in 1831 and are believed to have been melted down for their gold content.
It's among the largest medallions of its type to come to auction in the past few years and is likely to prove very attractive to collectors.
Other items offered in the sale include a 1929 $20, which carries an estimate of $70,000-90,000.
The piece is one of the few specimens that survived Roosevelt's 1933 Gold Recall Act.
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