Item 1: https://backpack.tf/item/277993854

Sale 1:

https://backpack.tf/profiles/76561199581722058#!/compare/1764460800/1764547200

https://backpack.tf/profiles/76561198164721898#!/compare/1764374400/1764460800

Untrace, sold by stn (almost out of date also)

Sale 2:

https://backpack.tf/profiles/76561198859721638#!/compare/1764460800/1764547200

https://backpack.tf/profiles/76561198164721898#!/compare/1764460800/1764547200

Sold with 140 keys for a Circling Heart Mining Light. Using there

Sale 3:

https://backpack.tf/profiles/76561198859721638#!/compare/1766448000/1766534400

https://backpack.tf/profiles/76561198071642008#!/compare/1766534400/1766620800

Sold for 250 keys pure (ID 16568888790)

Item 2:

https://backpack.tf/item/209897447

Sale 4:

https://marketplace.tf/items/tf2/48;5;u11

Sold for $500 on the 28th of Jan 2026

Keys were $1.85 on the 28th

= 270.27

Rounding down to 270

//

Sellers:

BPTF - None

MPTF - https://marketplace.tf/items/tf2/48;5;u11 - None

STN - https://stntrading.eu/item/tf2/Unusual+Circling+TF+Logo+Mining+Light - None

SCM - https://steamcommunity.com/market/listings/440/Unusual%20Mining%20Light?filter= - None

Sale(s):

250, 270

Including both sales into range, going with 250 - 270 keys