History 1: https://backpack.tf/item/9908008293

Untraceable:

https://backpack.tf/profiles/76561198115074385#!/compare/1614902400/1615507200

https://backpack.tf/profiles/76561198141054773#!/compare/1615334400/1615420800

Sold for 55 keys:

https://backpack.tf/profiles/76561198141054773#!/compare/1616457600/1616544000

https://backpack.tf/profiles/76561198069674214#!/compare/1616457600/1616544000

History 2: https://backpack.tf/item/263721092

Bulk to Tradeit.GG:

https://backpack.tf/profiles/76561198123496597#!/compare/1612137600/1612224000

https://backpack.tf/profiles/76561198893907666#!/compare/1608681600/1612224000

Untraceable, nothing matches:

https://backpack.tf/profiles/76561198893907666#!/compare/1612224000/1613433600

https://backpack.tf/profiles/76561198203811797#!/compare/1611792000/1612224000

Sold for a Haunted Ghosts Fed-Fightin' Fedora + 9 keys:

https://backpack.tf/profiles/76561198203811797#!/compare/1612310400/1612569600

https://backpack.tf/profiles/76561198244962432#!/compare/1612396800/1612569600

The Fedora had a suggestion at 32-36 keys (mean of 34) but the suggester was asked to close it since it was unstable at the time, just gonna use the mean value of that as a mini since no new sales occurred https://backpack.tf/suggestion/6022b6a51070811af7306ffe

34+9=43

Sold for 46 keys:

https://backpack.tf/profiles/76561198244962432#!/compare/1613347200/1613433600

https://backpack.tf/profiles/76561198296967233#!/compare/1613347200/1613433600

Sales at 43, 46, 55

Buyers were at ~44 when the sale at 43 happened, should be fine to exclude https://gladiator.tf/listings/601db58f713cdcdcc665e7cf

When 46 happened, buyers were only at 45 and the sale doesn't look like a quicksell https://gladiator.tf/listings/602aece642a2bf59c2317fad

Including 46 despite the buyers at 50 because 55 flat wouldn't make sense with 2 lower sales. There's also an outdated Marletplace.tf sale (from January) at 47.61 keys https://marketplace.tf/items/tf2/181;5;u13

Going with 46-55 for now