Item 1

https://backpack.tf/item/10967334586

Sale 1

https://backpack.tf/profiles/76561198336034192#!/compare/1683158400/1683331200

https://backpack.tf/profiles/76561198348685274#!/compare/1683244800/1683331200

10 keys

Sale 2

https://backpack.tf/profiles/76561198348685274#!/compare/1683504000/1683590400

https://backpack.tf/profiles/76561198123357451#!/compare/1683504000/1683590400

Keys likely used for the knife?, not too sure here

Sale 3

https://backpack.tf/profiles/76561198123357451#!/compare/1683590400/1683676800

https://backpack.tf/profiles/76561198071588645#!/compare/1683504000/1683849600

Keys likely used to buy the killing tree, looks like a Dead Presidents Bombing Run + 4 keys?

Bombing run has no valid sales, should probably use there

Sale 4

https://backpack.tf/profiles/76561198071588645#!/compare/1684281600/1684368000

https://backpack.tf/profiles/76561198349940660#!/compare/1684281600/1684368000

Added for a Smoking Brim-Full of Bullets

Sale 5

https://marketplace.tf/items/tf2/31212;5;u36

No sales here

Item 2

https://backpack.tf/item/12101475265

Sale 6

https://backpack.tf/profiles/76561198142247960#!/compare/1681084800/1681948800

https://backpack.tf/profiles/76561198983856237#!/compare/1681516800/1681689600

No clue

Sale 7

https://backpack.tf/profiles/76561198983856237#!/compare/1681689600/1681776000

https://backpack.tf/profiles/76561199245733895#!/compare/1681689600/1681776000

Untrace on buyer side?

Sale 8

https://backpack.tf/profiles/76561199245733895#!/compare/1681776000/1681862400

https://backpack.tf/profiles/76561199026390261#!/compare/1681689600/1681776000

Untrace on seller side

Total Sales

10

https://imgur.com/a/Ccido4T

Taking 10 keys c: