Dead Lead

https://backpack.tf/item/2181638050

Sale 1) Sold for 10 Keys

https://backpack.tf/profiles/76561198356863768#!/compare/1508976000/1509148800

Sale 2) Sold for a Purple Confetti Hustler's Hallmark

https://backpack.tf/profiles/76561198044524600#!/compare/1510099200/1510185600

High Outlier. Most likely a bulk sale with another Unusual of equal value that didn't come up.

Sale 3) Sold for either 10 Keys or a Bubbling Pirate Bandana

https://backpack.tf/profiles/76561198018528305#!/compare/1510185600/1510272000 - Seller's Backpack

https://backpack.tf/profiles/76561198140942701#!/compare/1510185600/1510272000 - Buyer's Backpack

Either way, I'll take the 10 Keys. It would serve as a Mini for the Bandana.

Sale 4) Sold for 9 Keys + 6 Refined

https://backpack.tf/profiles/76561198156962400#!/compare/1510272000/1510444800

Rounds to 9 Keys

Sale 5) Sold for either 10 Keys or a Stormy Storm Tavish Degroot Experience

https://backpack.tf/profiles/76561198067971717#!/compare/1510531200/1510617600 - Seller's Backpack

https://backpack.tf/profiles/76561198065646844#!/compare/1510531200/1510617600 - Buyer's Backpack

Either way, I'll take the 10 Keys for the same reason as in Sale 3.

Since Sales 3 and 5 were quicksells, I'll count 9 Keys low. Sale 1 took 13 days.