Item 1:

https://backpack.tf/item/13516247946

Sale 1:

Sold for 45 Keys (Unusual ID: "13899499725")

https://backpack.tf/profiles/76561199104457222#!/compare/1702166400/1702252800

https://backpack.tf/profiles/76561198124894928#!/compare/1701561600/1702252800

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Item 2:

https://backpack.tf/item/13410053837

Sale 2:

Bulk for Death at Dusk Fed-Fightin' Fedora

https://backpack.tf/profiles/76561198118518523#!/compare/1706140800/1706227200

https://backpack.tf/profiles/76561199315621199#!/compare/1706140800/1706227200

Sale 3:

Sold for 40 Keys (Unusual ID: "14098109656")

https://backpack.tf/profiles/76561199315621199#!/compare/1706227200/1706313600

https://backpack.tf/profiles/76561198841365001#!/compare/1706313600/1706400000

Rest of history is gambling

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Item 3:

https://backpack.tf/item/13377147867

Sale 4:

Sold for 40 Keys

https://backpack.tf/item/13381930661 (Key ID: "13799428904")

https://backpack.tf/profiles/76561198198896481#!/compare/1699920000/1700006400

https://backpack.tf/profiles/76561198199137143#!/compare/1700006400/1700092800

Sale 5:

~85 Keys traceable - Likely incomplete?

https://backpack.tf/profiles/76561198199137143#!/compare/1700352000/1700438400

https://backpack.tf/profiles/76561198311498888#!/compare/1700352000/1700438400

Sale 6:

Untraceable

https://backpack.tf/profiles/76561198311498888#!/compare/1702166400/1702252800

https://backpack.tf/profiles/76561199104457222#!/compare/1702166400/1702252800

Sale 7:

Untraceable

https://backpack.tf/profiles/76561199104457222#!/compare/1702252800/1702339200

https://backpack.tf/profiles/76561199247735558#!/compare/1702339200/1702425600

Sale 8:

Bulk

https://backpack.tf/profiles/76561199247735558#!/compare/1702857600/1703116800

https://backpack.tf/profiles/76561198850274253#!/compare/1703030400/1703116800

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Item 4:

https://backpack.tf/item/13258940625

Sale 9:

Untraceable

https://backpack.tf/profiles/76561198092061572#!/compare/1704672000/1704931200

https://backpack.tf/profiles/76561199104457222#!/compare/1704844800/1704931200

//

Total Sales

40, 40, 45

https://imgur.com/a/E7TapNd

Taking 40 - 45 Keys