Item 1

https://backpack.tf/item/5214710516

First few sales were a trade-back between quicksell.store bots and a trader so not using those

Sale #1

Sold for 15 keys (keys trace but use ID "13602525090" of the unusual to see them)-

Seller: https://backpack.tf/profiles/76561198850274253#!/compare/1696118400/1696204800

Buyer: https://backpack.tf/profiles/76561198354459626#!/compare/1696118400/1696204800

Marketplace.tf Sales

https://marketplace.tf/items/tf2/30618;5;u3015

MP.TF Sale #1

Sold for $49.99 on August 6, 2023

Average Key Price @ $1.99ish

49.99/1.99 = 25.12ish keys

Unknown History

MP.TF Sale #2

Sold for $49.99 on October 1, 2023

Average Key Price @ $2.03ish

49.99/2.03 = 24.62ish keys

https://backpack.tf/item/13434583010

Sales @ 15, 25, 25

Taking 15-25 here