I have the same style helmet, this one looks cool , but decal looks "to new" with flaked paint , also the Steel rivit pins are the large types and head liner is more of a ww2 vintage for this m16 sytle helmet, if it was ww1 you would have a leather head liner band with cushions plus with the 2 steel face mask lugs , that are missing and small style rivits,and no decal, chin strap looks correct. Cheers

BIG MIKE