Christies Late Roman helmet: 1 or 2?

[markusaurelius]

You know for sure that there are tables representing the dimensional increase of iron produced by rust, now look at the central ridge, look at the points where it is fixed to the shell of the helmet, look how it's thin and perfect, there isn't any deformation

Or the perfectly cut, circular, no loss of an edge neck guard (see photo of the comparisons). From looking at other originals, it just doesn't jive. Also from having examined original iron pieces that are well reserved, they are not cut that perfect. There was no need to make them an exact circle. It didn't affect the functionality, and furthermore was covered in sheathing and a leather edge in which you couldnt tell anyhow. No laser cutting tools back then :wink:
[attachment=8695]Neckguards.jpg[/attachment]