One of the most adequate helmets of the early Medieval Ages was the Norman open-faced helmet. Inspired by Anglo-Saxon design, the helmet covered and protected most of the head and provided a nasal guard to protect the bridge of the nose and ward off minor facial blows.
Also showing Roman influence in its construction, the piece was an adaptation and modification of several designs. Primarily this helmet was used on the battlefields during the 11th and 12th Centuries before newer and more efficient models were introduced. Though it was useful it was still flawed in its open-faced production and did little to fend off blindings.
Constructed of various metals, it saw its most popularity when designed with steel, though iron and brass was also used. Sometimes these helmets were adorned with crests and occassionally a plume of horsehair.