Re-suggesting, new sale. Sales from the last suggestion have been grandfathered in.

Sold for Midnight Whirlwind Soviet Strongarm (2.1 keys)

https://backpack.tf/profiles/76561198390369243#!/compare/1774656000/1774742400 - Near ID: 16865946804

https://backpack.tf/profiles/76561198845413445#!/compare/1774569600/1774742400

https://backpack.tf/item/10337920272

= 2.1 keys

Marketplace Sales:

https://marketplace.tf/items/tf2/31161;5;u3069

$5.20, June 8th

https://marketplace.tf/items/tf2/5021;6 - keys were $1.91

5.2/1.91 = 2.723, rounds to 2.7 keys.

Other Sales:

#1

https://backpack.tf/profiles/76561198081767537#!/compare/1773187200/1773273600

https://backpack.tf/profiles/76561198850274253#!/compare/1773187200/1773273600

https://backpack.tf/item/10779233722

Untraceable, only 1 key matches.

#2

https://backpack.tf/profiles/76561198169804678#!/compare/1773014400/1773100800

https://backpack.tf/profiles/76561199572036764#!/compare/1773792000/1773878400

https://backpack.tf/item/10792686693

Untraceable

#3

https://backpack.tf/profiles/76561199572036764#!/compare/1773792000/1773878400

https://backpack.tf/profiles/76561199238416066#!/compare/1773446400/1774224000

https://backpack.tf/item/10792686693

Untraceable

Sellers:

https://i.imgur.com/VNgC7f7.png

https://backpack.tf/item/9577438338 - 3 keys

https://backpack.tf/item/9710924202 - 6 keys

https://marketplace.tf/items/tf2/31161;5;u3069

https://backpack.tf/item/10763224703 - $5.20

https://backpack.tf/item/9645861356 - $17.50

Sales at:

2.1

2.7 (marketplace)

Taking 2.1-2.7 keys.