- In game it is marked as heavy armor, it weight is like heavy armor, but it uses the 'armorlight' tag. As a consequence it is funtionaly light armor, making full set bonuses for falmer armor impossible as the rest of the armor does carry the heavy armor keyword.
- Its material is 'ArmorMaterialHide', while the rest of the falmer armor uses 'ArmorMaterialSteel'. This causes the helmet to not benefit from any smithing perk, while the rest of the armor does. The 'matching set' perk also uses these material keywords, therefore the 20% bonus is not added with the full falmer set, but IS added when replacing the helmet with a regular steel one.
- Equipement is set to occupy one or more equipement slots. All helmets use at least 'hair' and 'circlet', the falmer helmet only uses 'hair' making it possible to wear a circlet underneath it.
In short, this looks like monday morning work. A morning where the coffee machine broke down.