Thanks to Erik for letting me know my range was a bit off, credits to him for the following!

https://gyazo.com/5bbf7dcb06440c5a79a7b0785afab756

https://backpack.tf/item/281109637 - history that matches the listing if you click on ''history''. Shows a B/O of 17 keys, meaning the marketplace sale caps at that.

Sale #1:

Sold for 12 keys pure + 21 refined (the unusual doesn't show up in the seller's backpack so here's its history!)-

Seller: https://backpack.tf/profiles/76561198176597974#!/compare/1547942400/1550707200

Buyer: https://backpack.tf/profiles/76561198044684270#!/compare/1550620800/1550707200

Unusual's History: https://backpack.tf/item/320476719

Sale #2:

Sold for 12 keys pure-

Seller: https://backpack.tf/profiles/76561198121830870#!/compare/1549411200/1549497600

Buyer: https://backpack.tf/profiles/76561198176597974#!/compare/1549497600/1549670400

Sorry if there's any mistakes, if there is please let me know so I can fix it as soon as possible, thank you!