Buyout was 99 keys: https://imgur.com/a/UFN2YCe

You can also see the seller's compare showing 99k incoming here: https://backpack.tf/profiles/76561198882175555#!/compare/1777248000/1777334400

Most other movements seem to be untrace/bulk/bot dumps, but your buyback from EMP is still in-date. Looks like it was traded in bulk and then bought back for 165k, but it's your sale obv so if you had some sort of agreement that would be important to note:

https://backpack.tf/item/10519354847

Bulk:

https://backpack.tf/profiles/76561198023517126#!/compare/1771200000/1771286400

https://backpack.tf/profiles/76561198085861958#!/compare/1771200000/1771286400

165k buyback:

https://backpack.tf/profiles/76561198085861958#!/compare/1772496000/1772582400

https://backpack.tf/profiles/76561198023517126#!/compare/1772496000/1772582400

Additionally, there's an active auction on Scrap right now, which would help in determining if either of the two values are an outlier:

https://scrap.tf/auctions/YPHBTF

If it's a low-end sale, (between 80-120ish) then 165 is probably an outlier and you'd range it x-99 or 99-x depending on the auction, something around low 130's is probably fine to take both values (99-165), and something around 140-150 means you can exclude 99 as an outlier and do x-165 (although anything past 165 on auction is unlikely considering a bot seller for 173k).