 Complete the following phrase:  The helmet appears to have been deliberately folded up and deposited in an artificial stone structure. It is thought to have been used for ceremonial occasions rather than for combat, and may already have been an antique by the time it was buried. It is of the same type as the Newstead Helmet found in 1905 and its design also has similarities with the Ribchester Helmet found in 1796 and the Hallaton Helmet found in 2000, though its facial features are more akin to those of helmets found in southern Europe. Its design may allude to the 