The prototype for these glorious helmets is the plain, uncrested Corinthian style of the 6th century BC. Originals of these can be seen in museums across the world. Those in the Goulandris Collection in the Museum of Cycladic Art in Athens, and in the Museum of Ancient Olympia are the inspiration for this collection.
The motifs on the crests are either geometric designs or symbolic creatures, as here.
Original helmets are much thinner and lighter than these, and the largest 'life-size' copies are also smaller than the circumference of today's average male head. They are most definitely not to be worn! Where mounted, they are on a marble base.