John Gittins, Deputy Coroner for North East Wales, declared the coins treasure under the Treasure Act 1996. According to a report by BBC News, the silver pennies date back to between 1307 and 1314, to the reigns of both Edward I and his son Edward II. Archaeology enthusiast Peter Jones, from Holywell, found a coin in 2006, then returned to the same spot a year later, when the other two were found. Jones regularly scours a field owned by his friend Ron Davies, for pre-historic items.
The coins were analyzed by experts at Cardiff's National Museum of Wales who discovered that they were 90 percent silver.
Jones said that he has found hundreds of old tools, made from flint, some of which dated back thousands of years before Christ.
He told the inquest that he did not usually use a metal detector and found the first coin in 2006 just "lying on the surface".
The following year, he took a metal detector to the same spot, and again found two similar coins on the surface. "I just rubbed them with my hand and they came clean," said Jones.
According to Gittins, the coins were now the property of both Davies and Jones, and they were entitled to have them back.
The inquest heard there was also interest from the Flintshire County Museum Service to put them on public display.