A copper alloy crown that had been intact on its owner’s skull since the Iron Age, around 250–150 BC, was found.

A copper alloy crown, decorated in La Tène style, found in situ still on  its owner's skull. The Iron Age burial was uncovered in Grave 112 at Mill  Hill near Deal, Kent,

crown; head-dress; diadem | British Museum

crown; head-dress; diadem | British Museum