Using last 2 months.

Sale 1:

Sold for 2 keys

https://backpack.tf/profiles/76561198311498888#!/compare/1700006400/1700092800

https://backpack.tf/profiles/76561198056506661#!/compare/1700006400/1700352000

https://backpack.tf/item/12877429049

= 2 keys

Sale 2:

Sold with some reclaimed metal for 2 keys

https://backpack.tf/profiles/76561198850121720#!/compare/1701302400/1701388800

https://backpack.tf/profiles/76561198803585076#!/compare/1701129600/1701388800

https://backpack.tf/item/9443786608

= 2 keys

Other sales:

https://backpack.tf/profiles/76561198865295475#!/compare/1700179200/1702252800

https://backpack.tf/profiles/76561198850121720#!/compare/1700092800/1700179200

https://backpack.tf/item/9443786608

Untraceable, bulk.

https://backpack.tf/profiles/76561198063475894#!/compare/1699228800/1699660800

https://backpack.tf/profiles/76561198917545856#!/compare/1652745600/1699574400

https://backpack.tf/item/7100490257

Untraceable, bulk

https://backpack.tf/profiles/76561198400372452#!/compare/1702080000/1702252800

https://backpack.tf/profiles/76561198850121720#!/compare/1701993600/1702080000

https://backpack.tf/item/6850392069

Bulk for Arachne's Web Lunon Fedora + minor items

https://backpack.tf/profiles/76561198314753939#!/compare/1698105600/1698278400

https://backpack.tf/profiles/76561198268152403#!/compare/1698192000/1698278400

https://backpack.tf/item/4746609533

Untraceable, most likely missing a person in history

https://backpack.tf/profiles/76561198268152403#!/compare/1698278400/1698883200

https://backpack.tf/profiles/76561199111292616#!/compare/1698192000/1698278400

https://backpack.tf/item/4746609533

Untraceable

https://backpack.tf/profiles/76561198133060031#!/compare/1699488000/1699574400

https://backpack.tf/profiles/76561198043444428#!/compare/1699660800/1699747200

https://backpack.tf/item/2842952420

Untraceable

https://backpack.tf/item/3176558433 - Gambled

https://backpack.tf/item/2788163139 - Gambled, dumped on scrap, or otherwise untraceable.

https://backpack.tf/item/2706084826 - Untraceable/traded between bots

Marketplace:

https://marketplace.tf/items/tf2/1117;5;u3009

$5.22, November 18th

$5.22, December 8th

Couldn't find histories.

Both sales are gonna be way too high compared the sales and sellers.

Sellers/Buyers:

https://imgur.com/a/Bhb6VTq

https://backpack.tf/item/4376724287 - 2 keys + 1 ref

https://backpack.tf/item/13226368104 - 2 keys + 1 ref

https://backpack.tf/item/4882427680 - 2 keys + 1.11 ref

https://backpack.tf/item/2858870546 - 2 keys + 20 ref

https://backpack.tf/item/11962045750 - 3 keys

https://backpack.tf/item/2781001480 - 4 keys

https://backpack.tf/item/7435341134 - $5.22

https://backpack.tf/item/7177510522 - $5.22

Buyers at ~1.6 keys.

Sales at:

2 keys (2x)

Taking 2 keys flat.

https://backpack.tf/profiles/76561199189570802#!/compare/1691625600/1702684800

https://backpack.tf/profiles/76561198370743471#!/compare/1702598400/1702684800

https://backpack.tf/item/11086164619

Untraceable, the 5 keys match on the seller's end.

https://backpack.tf/profiles/76561199059698603#!/compare/1702944000/1703030400

https://backpack.tf/profiles/76561198363628327#!/compare/1702944000/1703030400

https://backpack.tf/item/2706084826

Untraceable

https://backpack.tf/profiles/76561198363628327#!/compare/1702944000/1703030400

https://backpack.tf/profiles/76561198035931099#!/compare/1697932800/1703030400

https://backpack.tf/item/2706084826

Untraceable

https://backpack.tf/profiles/76561199193329839#!/compare/1703116800/1703203200

https://backpack.tf/profiles/76561199486012064#!/compare/1702771200/1703116800

https://backpack.tf/item/2700903619

Untraceable

https://backpack.tf/profiles/76561199486012064#!/compare/1702771200/1703116800

https://backpack.tf/profiles/76561199026390261#!/compare/1703030400/1703116800

https://backpack.tf/item/2700903619

Untraceable

https://imgur.com/a/g9r7Y7V

https://backpack.tf/item/3486769837 - new seller at 2 keys