Older sketch - It's become sort of a running 'thing' that Kurtz likes to wear the skulls of large and strange creatures we kill. This was maybe one of the first in what would become a series. Our first dragon taken down in the campaign (lost our first party member to it, too) and Kurtz carted the head back to have it stripped and remade as something wearable.
The helms just become props really - nothing that has any stats, but fun for role playing.
Link
Kajhera
Skulls as helmets are indeed quite visually interesting; I encourage their usage. ;)