A Boston couple discovered that the unattractive stone pot they had been using to hold plants was actually a 1,700-year-old relic 40 years ago.
Bas and Pat Starbuck, of Forest Dale, took the pot to Lincoln Museum to have it dated after several people remarked on how old it looked.
The pot was found by a diver in the Mediterranean in 1979 and given to Bas.
Experts revealed the pot likely dated back to 200AD in Carthage.
The couple, who were looking to get it valued, were advised not to pick the pot up by its handles any more.