Item 1

https://backpack.tf/item/13491298284

Sale #1

Sold with a Strange Pro KS Scattergun (25.69 keys) for 100 keys (keys found in buyer's side) = 100-25.69 = 74.31ish keys-

Seller: https://backpack.tf/profiles/76561198236504890#!/compare/1695772800/1695859200

Buyer: https://backpack.tf/profiles/76561198123789684#!/compare/1695686400/1695859200

Classified Buyers: https://imgur.com/a/BSZVrpE

Sale #2

Sold for 100 keys?-

Seller: https://backpack.tf/profiles/76561198123789684#!/compare/1695859200/1695945600

Buyer: https://backpack.tf/profiles/76561199195977759#!/compare/1695772800/1696032000

Item 2

https://backpack.tf/item/13242798153

Sale #3

Untraceable-

Seller: https://backpack.tf/profiles/76561197970262340#!/compare/1690329600/1690761600

Buyer: https://backpack.tf/profiles/76561197984683993#!/compare/1690416000/1691020800

MP.TF Sale #1

Sold for $199.99 on September 30, 2023

Average Key Price @ $2.03ish

199.99/2.03 = 98.51ish keys

Unknown History

https://marketplace.tf/items/tf2/31216;5;u281

Sales @ 74, 99, 100

Taking 74-100 here