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Peter Pentz, a curator at the National Museum of Denmark, says the discovery raises the possibility the Sutton Hoo helmet may in fact have originated in the country.

Sutton Hoo is thought to be the burial site of King Raedwald, an East Anglian ruler who died in 624AD.

While the pattern is not identical to the Sutton Hoo helmet, after close study of the two fragmented helmet panels, Mr Pentz says there are "many similarities".

"It really did revolutionize our understanding of the Anglo-Saxons," says Laura Howarth, an archaeology and engagement manager at Sutton Hoo, now a National Trust estate.

The Sutton Hoo helmet was painstakingly pieced back together over many years after it was first uncovered broken into hundreds of pieces.