Credits to awsommv for suggesting and Mindacos for additional sales: https://backpack.tf/suggestion/6164fbc55c69e16dba68e479

Item 1:

https://backpack.tf/item/4462807182

Sale 1:

https://backpack.tf/profiles/76561198404533497#!/compare/1605398400/1626220800

https://backpack.tf/profiles/76561199114877968#!/compare/1624838400/1626220800

Untrace

Sale 2:

https://backpack.tf/profiles/76561199114877968#!/compare/1626220800/1626393600

https://backpack.tf/profiles/76561198850274253#!/compare/1626134400/1626220800

Dumped to quicksell buy orders

Sale 3:

https://backpack.tf/profiles/76561198850274253#!/compare/1626393600/1626480000

https://backpack.tf/profiles/76561198141007429#!/compare/1626220800/1626825600

https://imgur.com/a/ETr9yCd (bought for 16)

16 keys

Sale 4:

https://backpack.tf/profiles/76561198141007429#!/compare/1626825600/1627516800

https://backpack.tf/profiles/76561198297034962#!/compare/1627862400/1627948800

dumped to tradeit.gg

Sale 5:

It also sold for 18 keys here (credits Lemons)

https://backpack.tf/profiles/76561199131053693#!/compare/1633564800/1633651200

Mindacos:

Sale 6:

Sold for 24 Keys?

https://backpack.tf/profiles/76561198453530349#!/compare/1637798400/1637884800

Not entirely traceable, but it resold for the following sale so who cares:

Sale 7:

https://backpack.tf/profiles/76561198874309787#!/compare/1637884800/1637971200 Sold for 20 keys 10.66 ref

https://gladiator.tf/sales?item=Circling%20Peace%20Sign%20Medic%27s%20Mountain%20Cap The keys are untraceable but all the ref matches perfectly, i think that's good enough.

Since buyers very actively counter 18 now this should be resuggested at 20 flat.

Sales:

16, 18, 20, 24?

20 flat as per Mindacos' comments.