Item 1:

https://backpack.tf/item/11966842627

Sale 1:

https://marketplace.tf/items/tf2/31284;5;u243

Sold for $115 on the 21st of June 2025

Keys were 1.98 on the 21st

https://marketplace.tf/items/tf2/5021;6

115/1.98

= 58.08

Rounding down to 58 keys

Item 2:

https://backpack.tf/item/11981598201

Sale 1:

https://backpack.tf/profiles/76561198180523995#!/compare/1747612800/1750723200 - Doesn't show on sellers side

https://backpack.tf/profiles/76561198453530349#!/compare/1750636800/1750723200

Untrace, Sold to a bot

Sale 2:

https://backpack.tf/profiles/76561198453530349#!/compare/1751155200/1751241600

https://backpack.tf/profiles/76561199111073161#!/compare/1751155200/1751241600

Untrace. Bought and sold between two bots same day

Item 3: (credits blaze)

https://backpack.tf/item/11991151503

Sale 1:

https://marketplace.tf/items/tf2/31284;5;u243 

Sold for $115 on the 14.07.2025

Keys were 2.01 on the 14th

https://marketplace.tf/items/tf2/5021;6

115/2.01

= 57.2 keys

Rounding to 57 keys

Two recent sales (57, 58), going with 57 - 58 keys