Roman helmets: Imperial Gallic/Italic and Ridge - comparisons and sources

[Nathan Ross]

You are continuing not to reply on topic...

And then you start discussing motorcycle helmets...

Do you have an accurate replica of a ridge helmet? Have you stress-tested it and compared the results to similar tests on a Gallic/Italic type?

If not:

Can you demonstrate why a wealthy, organised and effective Roman state would start producing poor quality helmets to equip its army and continue doing so for 150 years, without anyone noticing or commenting?

If both answers are 'no', then I'm afraid there can be little substance to this debate!