Marketplace Sales:

https://marketplace.tf/items/tf2/1107;5;u3115

Couldn’t find either history

$10.80, July 19th & August 17th

https://marketplace.tf/items/tf2/5021;6 - keys were:

$2.01, July 19th

$1.83, August 17th

10.8/2.01 = 5.373, rounds to 5.5 keys

10.8/1.83 = 5.902, rounds to 6 keys

Other Sales:

#1

https://backpack.tf/profiles/76561199084784906#!/compare/1750377600/1750464000

https://backpack.tf/profiles/76561199418067745#!/compare/1750291200/1750550400

https://backpack.tf/item/3111413690

Bulk for keys

#2

https://backpack.tf/profiles/76561199418067745#!/compare/1752624000/1752710400

https://backpack.tf/profiles/76561197982127154#!/compare/1752537600/1752624000

https://backpack.tf/item/3111413690

Backpack buy

#3

https://backpack.tf/profiles/76561199878085713#!/compare/1754870400/1754956800

https://backpack.tf/profiles/76561199564942025#!/compare/1754870400/1754956800

https://backpack.tf/item/7444864563

Untraceable/Bulk to STN

#4

https://backpack.tf/profiles/76561199564942025#!/compare/1755043200/1755129600

https://backpack.tf/profiles/76561198804010916#!/compare/1754956800/1755043200

https://backpack.tf/item/7444864563

Untraceable, went straight back to STN anyways so whatever

#5

https://backpack.tf/profiles/76561198804010916#!/compare/1756080000/1758067200

https://backpack.tf/profiles/76561199026390261#!/compare/1756252800/1756339200

https://backpack.tf/item/7444864563

The aforementioned STN dump. The rest of the history is gambling-related, with the exception of a potential skinport bot sale, which I have no clue how to find on the site. Help.

https://backpack.tf/item/9277639585 - quicksell.store bots

Sellers:

https://i.imgur.com/McV3wts.png

https://backpack.tf/item/9277639585 - 6 keys

https://marketplace.tf/items/tf2/1107;5;u3115

https://backpack.tf/item/3111413690 - $10.80 (~5.7 keys)

Sales at:

5.5

6

Taking 5.5-6 keys.