History 1: https://backpack.tf/item/9776312591

Untraceable, nothing matches:

https://backpack.tf/profiles/76561198375673085#!/compare/1613174400/1613347200

https://backpack.tf/profiles/76561198082177132#!/compare/1611792000/1614643200

History 2: https://backpack.tf/item/9727255371

Sold for 28 keys:

https://backpack.tf/profiles/76561198061530704#!/compare/1612137600/1612396800

https://backpack.tf/profiles/76561198198970103#!/compare/1612396800/1612656000

History 3: https://backpack.tf/item/9647477912

Scrap.tf bots only trade Non-Unusuals

Sold to a quickbuyer for 15 keys:

https://backpack.tf/profiles/76561198179740601#!/compare/1615161600/1615334400

https://backpack.tf/profiles/76561198002757046#!/compare/1615248000/1615334400

Sold for 19 keys:

https://backpack.tf/profiles/76561198002757046#!/compare/1615593600/1615680000

https://backpack.tf/profiles/76561197964546925#!/compare/1615593600/1615680000

History 4: https://backpack.tf/item/9561474353

Wasn't Unusualified:

https://backpack.tf/profiles/76561198153534899#!/compare/1611446400/1613347200

Untraceable:

https://backpack.tf/profiles/76561198165554600#!/compare/1616716800/1617235200

https://backpack.tf/profiles/76561198072484882#!/compare/1617062400/1617235200

Bulk:

https://backpack.tf/profiles/76561198072484882#!/compare/1617062400/1617235200

https://backpack.tf/profiles/76561198078252542#!/compare/1617235200/1617321600

Untraceable:

https://backpack.tf/profiles/76561198078252542#!/compare/1617321600/1617408000

https://backpack.tf/profiles/76561198113622176#!/compare/1617321600/1617408000

Bulk:

https://backpack.tf/profiles/76561198113622176#!/compare/1617408000/1617494400

https://backpack.tf/profiles/76561198045551697#!/compare/1617321600/1617408000

History 5: https://backpack.tf/item/9551961229

Wasn't Unusualified:

https://backpack.tf/profiles/76561198064288490#!/compare/1616284800/1616889600

Wasn't Unusualified:

https://backpack.tf/profiles/76561199118546232#!/compare/1617148800/1617235200

History 6: https://backpack.tf/item/9539451557

Neither of those Scrap.tf bots trade Unusuals so all the sales in between won't be Unusual either

Wasn't Unusualified:

https://backpack.tf/profiles/76561198839402693#!/compare/1613347200/1613433600

Wasn't Unusualified:

https://backpack.tf/profiles/76561198078552523#!/compare/1614988800/1615075200

History 7: https://backpack.tf/item/9539237144

Untraceable:

https://backpack.tf/profiles/76561198249000434#!/compare/1614297600/1614384000

https://backpack.tf/profiles/76561199092802615#!/compare/1614297600/1614384000

18 keys match in buyer's compare:

https://backpack.tf/profiles/76561199092802615#!/compare/1614297600/1617235200

https://backpack.tf/profiles/76561198016593811#!/compare/1614211200/1614297600

History 8: https://backpack.tf/item/9539018160

Wasn't Unusualified:

https://backpack.tf/profiles/76561199113821000#!/compare/1613520000/1614038400

Sold to a quickbuyer:

https://backpack.tf/profiles/76561198140065002#!/compare/1614643200/1615248000

https://backpack.tf/profiles/76561198164651434#!/compare/1614556800/1614643200

Sold for 20 keys:

https://backpack.tf/profiles/76561198164651434#!/compare/1614729600/1614816000

https://backpack.tf/profiles/76561198054825186#!/compare/1614729600/1614816000

Bulk:

https://backpack.tf/profiles/76561198054825186#!/compare/1615852800/1615939200

https://backpack.tf/profiles/76561198269140999#!/compare/1615766400/1615852800

Sold alongide a Nether Void Taunt: The Schadenfreude, can't trace what they sold for:

https://backpack.tf/profiles/76561198269140999#!/compare/1617148800/1617321600

https://backpack.tf/profiles/76561198883610801#!/compare/1617235200/1617321600

Unsolds:

2 young sellers at 30 keys https://backpack.tf/item/9561474353 https://backpack.tf/item/9551961229

Sales at 15, 18, 18, 19, 20, 28

15 was to a quickbuyer so excluding

28 sold only after a couple of days after being listed at 28 so it most likely should be included, no sellers counter it either https://gladiator.tf/listings/6015a6abf4ce3acbed4d065f

Let's go with 18-28 for now