The so-called Illyrian helmets, with a rectangular opening for the face, are
a frequent topic in archaeological literature for several reasons. They are
distributed over a large territory - on the Balkan Peninsula and beyond, so
many archaeologists from various countries were involved in their study. Then
there is the great diversity of forms, where each type or subtype represents
a theme in itself posing various questions, and finally new Illyrian helmets
appear all the time, even in regions far from their main concentration areas,
or with unfamiliar details, demanding new analyses and explanations. The
author discusses their division into types and subtypes, chronology,
variants, and comes to the conclusion that a proper study of this theme will
be possible only when various aspects of their appearance, including ancient
written sources as well as the material culture of this period in particular
regions, are taken into consideration because of their complex and versatile
role in ancient Balkan history.