Only one sale I know of (my own):

Purchased for orange footprints orbiting fire mancer's mask + haunted ghosts battle boonie + 20 keys

According to backpack prices, mask is 75 and boonie is 30-34, so that puts us at 125-129, but both of these hats have outdated prices.

Listing was up for at least six months, and seller was asking 120 keys as a pure buyout but accepted item overpay.

https://backpack.tf/profiles/76561198099662062#!/compare/1560729600/1560816000

https://imgur.com/a/OVvM77S