Thanks to ツ JoXu ツ for the help

7 months old price

No sellers

Sale #1

https://backpack.tf/profiles/76561198022970604#!/compare/1509840000/1511481600

Sold for 40 keys pure ~ 40 keys

Sale #2

https://backpack.tf/profiles/76561198129402515#!/compare/1507766400/1507852800

quicksold for 37 keys pure ~ 37 keys

Sale #3

https://marketplace.tf/items/626;5;u90

Sold for 80 dollars

80/1.96 = 40.8 keys ~ 40 keys

https://backpack.tf/profiles/76561198052736868#!/compare/1506038400/1506124800

my guess is that this is one that was sold through marketplace.tf, but i might be wrong

Sale #4

https://backpack.tf/profiles/76561198052736868#!/compare/1507420800/1507766400

http://www.tf2outpost.com/trade/29395740

Bulk sale for Circling Heart Fed-Fightin' Fedora

Have any proof/counter proof, it's more than welcome!