It looks well used. I doubt it was aged to look like this. The paint discolored just like my Grandfathers shed did. Just my opinion, not trying to guess.
Liner looks good. Can't tell about the paint from these photos.
The wear on the helmet looks unnatural and man made. Note repetitive wear marks to simulate wear especially on the dome and around the vent lugs. Not one that I would want personally.
Sorry but would pass on this one the snow camo looks fresh to me and made to look original.
Can you see the decal ?
original helmet, ok to me