https://backpack.tf/item/9562207515 This is the item history.

https://backpack.tf/profiles/76561198047672832#!/compare/1738886400/1740182400 The One-Man Army was received after Feb 6, with the seller getting nothing in return:

https://backpack.tf/profiles/76561198166790626#!/compare/1738022400/1738108800

Seems like it added a Genuine Robo Sandvich(~200 Keys) + more for a Green Energy Killer Exclusive...?

https://backpack.tf/profiles/76561199111073161#!/compare/1740268800/1740355200

https://backpack.tf/profiles/76561198047672832#!/compare/1740182400/1741651200

It could be argued that it resold for less, but I don't think that's a fair assumption to make in this case given an unusual was involved, and the sale is definitely incomplete.

I suppose this will do, then.