PUBLISHED: 17:29 GMT, 25 February 2014 | UPDATED: 18:44 GMT, 25 February 2014
A grandfather who thought he had found a precious silver ring in the ground ran for his life after discovering it was a pin - attached to a hand grenade.
Eagle-eyed John Hill, 67, was with his family scouring farmland in Sampford Peverell, Devon with a metal detector when he stumbled across the shiny metal loop.
He pulled what he hoped was an ancient ring from the ground but then discovered the ring was attached to a pin - hanging out of a live Second World War grenade.