A Roman marble coffin which was spotted in the bushes of a garden in Dorset has sold at auction for £96,000.
Mr Schwinge described how he saw the coffin "peeping out from under some bushes" during a routine valuation.
"As I drew closer I realised I was looking at a Roman sarcophagus of exceptional quality," he said.
Mr Schwinge, of Duke's in Dorchester, discovered the family had acquired the sarcophagus almost 100 years ago at auction.
An auction catalogue from 1913 shows the coffin was imported to Britain by Queen Victoria's surveyor of pictures, Sir John Robinson, who lived at Newton Manor in Swanage, Dorset.
The rectangular sarcophagus is carved from fine quality white marble, said a spokesman for Duke's, who sold the coffin for a second time.
The quality of the carving suggests it was made for a high status individual.
Experts from the British Museum have estimated the sarcophagus dates from the 2nd Century.
The owners were "utterly delighted" with the sale, Duke's said.