Some of the 90 pieces of gold and silver found in central England last year - after an unemployed man searching a farmer’s field with a metal detector discovered loot in 2009 - have formally been declared to be treasure.
That means it is at least 300 years old and at least 10% precious metal. It also means you can't have any of it if you find it, is is property of The State. Anyone who finds an object believed to be treasure must report it.
Sorry, treasure hunters.
New haul of Anglo-Saxon gold and silver unearthed in central England is declared ‘treasure’ - Associated Press