An example of the type where the helmet comes in two parts, which are hinged together in the centre of the forehead and where there is a representation of hair.
The face is that of a beardless youth.
The eye sockets, nostrils and mouth between the lips have all been pierced through the metal of the mask.
References:
Garbsch, J. (1978), "Römische Paraderüstingen", p.65
Beck, F. & Chew, H. (1991), "Masques de Fer. Un officer romain du temps de Caligula", Editions de la Réunion des musées nationaux, Paris (Exhibition catalogue), p.120, Fig.74b