First suggestion :)

Last suggestion was outdated for over a year and with rising b/o I wanted to make a suggestion c:

Sale 1:

https://backpack.tf/item/821016248

https://backpack.tf/profiles/76561199112225445#!/compare/1622851200/1622937600

Sold for 55 keys

Sale 2:

https://backpack.tf/item/354860951

https://backpack.tf/profiles/76561198841031804#!/compare/1620000000/1620172800

Used with mix trade for prof ks black rose:

b/o black rose: 92

92 keys - 29 keys (in pure and mixed) = 63 keys for the fez

Sale 3:

https://backpack.tf/item/252418803 duped fez

https://backpack.tf/profiles/76561198050958150#!/compare/1612310400/1612656000

Unusable

Sale 4:

https://backpack.tf/item/821016248

https://backpack.tf/profiles/76561198439812057#!/compare/1623283200/1623369600

Sold for 57 keys in mixed

Had offers of around 55-56 keys too.

Marketplace.tf sale: $119

$119 / 1.95 = 61 keys

Reposted thanks to the replies from Strange and scaredy-cat!