[4][6][7] Accurate representations on Corinthian vases are sufficient to indicate that the Illyrian type helmet was developed before 600 BC.
[8] The helmet is named today as Illyrian type for convenience due to many initial archaeological discoveries coming from the region of Illyria.
[6] The first Type III helmets were created in workshops situated somewhere on the Illyrian coast of the Adriatic.
[11] The Illyrian type helmet did not obstruct the wearer's critical senses of vision though the first two varieties hampered hearing.
[12][15] A variety of the helm had also spread to Italy based on its appearance on ivory reliefs and on a silver bowl at the "Bernardini" tomb at Praeneste.