Bunch of recent sales, thank you to Grord_♠ for the last one:

No sales on marketplace.tf: https://marketplace.tf/items/tf2/158;5;u39

Item: https://backpack.tf/item/1192884893

2/08: sold for 65 keys: https://backpack.tf/profiles/76561198043059273#!/compare/1707350400/1707609600

2/10: I have no idea https://backpack.tf/profiles/76561198441300018#!/compare/1707436800/1707609600

2/16: Looks like a trade back or something? I have no idea; the one guy looks to have cashed out and it doesn't show in the other compare

https://backpack.tf/profiles/76561199161916038#!/compare/1708041600/1708128000

https://backpack.tf/profiles/76561198798924937#!/compare/1707868800/1709769600

2/17: once again have nothing, doesn't show up in either compare

https://backpack.tf/profiles/76561198073259054#!/compare/1708041600/1708214400

https://backpack.tf/profiles/76561199245733895#!/compare/1708128000/1708214400

2/20: dumped entire inventory to a STN bot, no clue what is what

https://backpack.tf/profiles/76561199581722058#!/compare/1708387200/1708473600

https://backpack.tf/profiles/76561199245733895#!/compare/1708214400/1708387200

2/29: second guy in the history bought it back from the bot for some reason? Looks to be a bulk alongside a BF Salty Dog, Earbuds, Strange Pro KS Eyelander, aussie Black Box, aussie SMG, two aussie Blutsaugers, and an aussie Axtinguisher for a Tesla Coil Hat With No Name. Both the Salty Dog and HWNN are outdated so probably better to use this for pricing those.

https://backpack.tf/profiles/76561198441300018#!/compare/1709164800/1709251200

3/01: Purchased from the STN bot for 67 keys and 5.44 ref, rounding down to 67 keys. Compare doesn't show all the keys so basing off of what it does show along with Grord_♠'s screenshot.

https://imgur.com/gallery/j3uuXPy

https://backpack.tf/profiles/76561198153961098#!/compare/1709164800/1709424000

Going with 65-67 keys.

Another sale with the same one has occurred 5/01, was bulk with some other hats, taunt, and keys for a CV Classy Capper, which is currently outdated

https://backpack.tf/profiles/76561198153961098#!/compare/1714435200/1714521600

https://backpack.tf/profiles/76561198077555267#!/compare/1714435200/1714521600