http://www.tf2outpost.com/trade/7545838 - Sold for 3

Not many of these on the market that aren't a collector level. Everything looks good as far as I can see, so it's going to be an upvote from me.

It's a nice, rather sought-after hat, and your proof seems adequate, so upvote

You do happen to have one in your backpack but considering the rest of your backpack I highly doubt it has anything to do with your price suggestion.