H.R.Robinson Helmet Typology

[Peroni]

Now there's a very concise list of attributes, which covers just about any eventuality!! (EXcept cross-bracing :wink: )

Cross-bracing? Y/N
Hemispherical or Vertical? H/V

Many more and it may get confusing.

these attributes would certainly allow helmets to be sorted into Main Groups which Mike mentioned earlier (spreadsheet 'sort' function).

Names for these groups?
"Montefortino"
"Coolus/Hagenau"
"Weisenau" (Covers both HRR's "Imperial Italic & Gallic" which can sometimes be contentious)
"Niederbieber"
"Mask Helmets" (covers all types)
"Bubenweiler" + etc. "Cavalry Helmets" (Attic types)
"Ridge Helmets"
"Spangenhelm"