If the proof of purchase looked like this it would be 10 trillion times better and I'd use it all the time.
(maybe consider that as a mod idea)
Very good hat I love the whole set too

I would love to see a band around the helment.

love it but to similar to the PoP
tf2 has to many samey hats
https://wiki.teamfortress.com/wiki/Proof_of_Purchase

proof of purchase but actually good

Isn't this already in the game?

Something like the Mad Mask would be cooler.

I not saying it can't be the only one.
But still looks TOO similar, even with the metal map spec. I don't see much reason to add it in game if another identical hat already exists.

Maybe attaching a small metal plate on the hat could help, and the body cosmetic already has a lot of those.

@B. Comet

The only thing our hat has in common with the PoP is the fact its the same styled WWI hat, the brodie. Our take has paintablity and a brand new spec map to simulate actual metal. The PoP is a very poorly made hat, and just because some a similar item already exist doesn't mean it can be the only one.

I don't want to sound like a moron, but is almost identical to the Proof of Purchase.
Maybe some extra details could help to make it more unique.