Evidence for legionary vs auxiliary helmet patterns

[Tim Edwards]

Thanks for supporting the debate with more evidence.

The Schaan and Brigetio groups are excellent case studies. I do not subscribe to the anyone wore anything school of thought, but rather I think with careful study we will identify that particular battle groups or even individual units displayed certain trends within their ranks.
Whether such commonality is a fluke of procurement, commander's whim, fashion or state of funding may admittedly be more a matter of conjecture.

I still stand by my assertion that I have yet to see an iron gallic helm with crest knob. As you state, the Gallic A's you reference are of copper alloy.
Whilst the J pattern may have had a soldered crest knob, it may equally have had a soldered slide!

I'm still flogging my dead proverbial horse - can anyone show me evidence that First century legionaries wore iron helmets?! There seems more substantial evidence they wore copper alloy helmets, and often side feathers too...