This HGU-55/P was aquired by me last weekend. It shows the VF-31 Felix design (hand cut cat) and the white tape is the wider version. The HGU-55/P is an early version with thin edge roll and has a TPL liner. Unfortunately the name on the back is unreadable and there is nothing to be found (as far as I can see) on the inside.
Somewhere during its life, the helmet was adjusted to light weight chin/nape strap configuration. (see the covered holes on the sides)
Can this be an original helmet?