H.R.Robinson Helmet Typology

[marcos]

A suggestion ; sometime to file pictures of ancient weapons I use a
2-1-2 code, to remeber as informations a possible.
According all previous posts, and adapting that code, it could sounds like this:

There are 5 fields to describe and classify all the peculiarity of the helmet, and these must be of course easy understandable.

First 2 fields: explaining period and belonging
Early Italic (EI) – Late Italic (LI) – Early Roman (ER) – Medium Roman (MR) – Late Roman (LR )

Third filed : relating to the army corps
Infantry (I) – Cavalry (C) – Parade and sports (P) – Unknown (U)

Last 2 fields: a numeric code explaining some peculiarities of the helmet and the material it is from
1,2,3 … and Bronze (B) - Steel (S) - Mixed (M)

An example :

below helmet could be ER-i-2B



and namely it means
Early period, Roman - Infantry - type 2 , made from bronze

May be it doesn't sound lovely as "Coolus" or "mannheim", but from that we can have much more informations and to file almost all types of helmets.
Furthermore , we don't have more the incongruence of calling a type with the name of the find spot of the first exemplar. In fact , why to call Montefortino an helmet found in Sicily either in Apulia ?