Roman legionary helmet (Galea), 39-70 A. D.
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Hagenau helmet, 39-70 A. D. Hagenau type helmets are made of bronze and have a more-or-less hemispherical bowl, with a wider, flat or sloping neckguard than those found on the Montefortino and Coolus helmets.
Source: Drusheim near Hagenau, Germany