https://backpack.tf/item/10655714937

21 keys:

https://backpack.tf/profiles/76561198295690725#!/compare/1670976000/1671494400

https://backpack.tf/profiles/76561199197866625#!/compare/1671148800/1672185600

https://backpack.tf/item/11523525391

Untrace:

https://backpack.tf/profiles/76561198850274253#!/compare/1665619200/1665705600

https://backpack.tf/profiles/76561199023889538#!/compare/1652572800/1665792000

Floppa the caracal took a massive dump on it and then sent it to Qsstore:

https://backpack.tf/profiles/76561199023889538#!/compare/1665792000/1669939200

https://backpack.tf/profiles/76561199111073161#!/compare/1665705600/1665792000

Holy Grail High Five + Showstopper Flippin' Awesome + Head Prize + Soldier's Stash + Strange KS Eyelander

https://backpack.tf/profiles/76561199111073161#!/compare/1666051200/1666137600

https://backpack.tf/profiles/76561198882492185#!/compare/1667001600/1667347200

(taking buyers at the time since Qsstore most likely priced the items at that)

High Five: 10 keys 46.77 ref https://gladiator.tf/time-machine?item=Holy+Grail+Taunt%3A+The+High+Five%21&at=2022-12-10T19%3A56%3A11.000Z

Flippin Awesome: 4 keys 45.11 ref https://gladiator.tf/time-machine?item=Showstopper+Taunt%3A+Flippin%27+Awesome&at=2022-10-18T18%3A57%3A31.000Z

Head Prize: Head Prize: 4 keys 38.22 ref https://gladiator.tf/time-machine?item=The+Head+Prize&at=2022-10-18T18%3A58%3A21.000Z

Stash: 3 keys 6.33 ref https://gladiator.tf/time-machine?item=Soldier%27s+Stash&at=2022-10-18T18%3A58%3A00.000Z

Eyelander: 1 key 52.88 ref https://gladiator.tf/time-machine?item=Strange%20Killstreak%20Eyelander&at=2023-01-03T19:58:49.956Z

This adds up to roughly 25 keys, buyout was 20 keys 24 ref https://gladiator.tf/time-machine?item=Kill-a-Watt%20Thousand-Yard%20Stare&at=2022-10-19T07:20:07.000Z

Rounding down to 20

taking 20-21 keys here