Made with 3ds Max 2017 and Substance Painter
From Wikipedia: The Corinthian helmet originated in ancient Greece and took its name from the city-state of Corinth. It was a helmet made of bronze which in its later styles covered the entire head and neck, with slits for the eyes and mouth. A large curved projection protected the nape of the neck.
Out of combat, a Greek hoplite would wear the helmet tipped upward for comfort. This practice gave rise to a series of variant forms in Italy, where the slits were almost closed, since the helmet was no longer pulled over the face but worn cap-like. Although the classical Corinthian helmet fell out of use among the Greeks in favour of more open types, the Italo-Corinthian types remained in use until the 1st century AD, being used, among others, by the Roman army.