Imperial gallic helmet from Romania.

[kyvernat]

This particular helmet if it be Gallic or anything other shows how the cross pieces have been added to maybe stand up to the Dacian Falcs, so might we say very late 1st to early 2nd century in its useage.

As far as I know, the "eyebrows" of this size and shape can be found on helmets dated back to the 1st half of 1 century AD - so maybe it's a kind of "old-fashioned" helmet modified in the late 1st - early 2nd century AD.