Item 1:

https://backpack.tf/item/9458481234

Sale 1:

https://backpack.tf/profiles/76561198242355350#!/compare/1746662400/1746748800

https://backpack.tf/profiles/76561199581722058#!/compare/1746662400/1746748800

Bought for 32 keys and 1.66 ref (ID 15718831707)

Note:

The above sale also had the user buy a White Lightning Vampire Vanquisher from the STN bot for 47 keys (ID 15718758507)

Sale 2:

https://backpack.tf/profiles/76561198106511423#!/compare/1750809600/1750896000

https://backpack.tf/profiles/76561199389549498#!/compare/1750809600/1750896000

Untrace

Item 2:

https://backpack.tf/item/13145272984

Sale 3 & 4:

https://marketplace.tf/items/tf2/601;5;u11

Sold for $69.9 on the 20.06.2025 and on the 19.07.2025

Keys were $1.99 on the 20th (69.9/1.99) = 35.1

Keys were $2.01 on the 19th (69.9/2.01) = 34.7

Round both sales to 35 keys

Sellers

BPTF - https://backpack.tf/item/9458481234 - https://imgur.com/a/t2um3pD - 36 keys

MPTF - https://marketplace.tf/items/tf2/601;5;u11 - None

STN - https://stntrading.eu/item/tf2/Unusual+Circling+TF+Logo+One-Man+Army - None

SCM - https://steamcommunity.com/market/listings/440/Unusual%20One-Man%20Army?filter=Circling+TF+Logo - None

Sales:

32, 35, 35

Going with 32 - 35 keys