A lead ball found at a medieval battle site could be the oldest surviving cannonball in England, an expert says.
The lead cannon ball is believed to have bounced at least twice and possibly hit a tree [Credit: Northampton Battlefield Society]
The damaged ball was found at the site of the Battle of Northampton fought during the War of the Roses.
Medieval artillery expert Dr Glenn Foard said: "It is highly likely the projectile was fired during the battle [10 July 1460]."
It will be revealed to the public at a Northampton hotel in Eagle Drive close to the battlefield on Thursday night.