segmentata

[Robert Vermaat]

b) brought the hamata with them? That I have not seen any evidence of.

None of us have, simply because the hamata is based on barbarian Celtic/Gallic hamata in the first place. In a sense, it was auxiliary types, although not in the Roman army at that stage, that introduced it to the Romans. The barbarians had it first, so there would be no surprise if they also had it last as auxiliaries and then legionaries.

Was it not introduced befiore the Romans used celts as auxiliaries? What dates are you thinking of? Way outta my leage here.