Any thoughts/opinions of this helmet?

[Firmus4474]

Re the helmet discussed in this forum:

http://www.romancoins.info/MilitaryEqui ... l#Guttmann

The helmet is on exhibition at the Museum Carnuntinum in Austria and also in the catalogue for the exhibition. Professionally restaured and scientifically documented as I was told. No concern as to authenticity.

Very good .Thank you.Full steam ahead with the project then.
I'm convinced that this helmet never had a brow guard,the only detail I'm not sure about is the neckguard.
It seems to me that it had two loops one on each edge for the strap so,I'm going to make my reconstruction this way(if I find I'm wrong latter this will be easy enough to fix).
By the way,any idea where this helmet was found?