Christies Late Roman helmet: 1 or 2?

[Urselius]

The two helmets are possible to interpret as transitional types. Given that it is inescapable that some Roman armourers must have worked before, during and after the introduction of the Ridge Helmet, it is likely that at least some of these craftsmen would have carried over design elements from the previous Roman helmet types.

In the shape of the cheekpieces: leaving a trefoil shaped opening for the face, in overlapping them at the chin fastening and in being hinged to the skull, they conform to earlier helmet patterns. These characteristics could be thought of as having been transferred from the earlier to the later helmets.