Updated:

Sale #1:

https://marketplace.tf/items/tf2/162;3

https://backpack.tf/item/275353491

$2000 (1100keys) on 19 Dec 2025 (1.83 per key)

Sale 2:

https://backpack.tf/profiles/76561197982127154#!/compare/1765843200/1765929600

https://backpack.tf/profiles/76561198210322871#!/compare/1765411200/1765929600

Sold for a Strange Circling Heart Head Warmer + 250 keys.

No other valid sales (From banned user, then dumped on stn and bought same day) for head warmer better used there

Sale 3:

https://backpack.tf/profiles/76561198886850124#!/compare/1761091200/1761177600

https://backpack.tf/profiles/76561198044923951#!/compare/1761091200/1761177600

Looks like 1275 keys pure

Special thanks to @Polarbeahr and @Shuffle Spy, for the fixing the key conversation price and @moose for providing the sale #2, #3 and price range.