Rare coin find stuns historians A man with a metal detector has unearthed a Roman bronze coin so rare it bears the face of a mystery emperor who "ruled" Britain for a matter of days. Brian Malin, from Oxfordshire, found it in a field in the county. It bears the face of Emperor Domitianus and is only the second coin ever found which bears the image of the self-proclaimed ruler of Britain and France in 271AD. A similar coin was found in France 100 years ago but until now its uniqueness had meant both Emperor Domitianus and the coin were...