Head of the Party

https://backpack.tf/item/7662906695

Sale 1) ?

https://backpack.tf/profiles/76561198076088370#!/compare/1557446400/1557532800

https://backpack.tf/profiles/76561198018489153#!/compare/1556409600/1558137600

Sale 2) ?

https://backpack.tf/profiles/76561198201364639#!/compare/1561852800/1561939200

https://backpack.tf/item/7661064080

Sale 3) Bulk sale for a Bonzo-the-All-Gnawing Cotton Head

https://backpack.tf/profiles/76561198011234844#!/compare/1558569600/1558656000

Sale 4) Sold for a Stare From Beyond Tartan Spartan + Kill-a-Watt Combustible Kabuto

https://backpack.tf/profiles/76561198297554259#!/compare/1558828800/1559347200

https://backpack.tf/profiles/76561198318170190#!/compare/1559260800/1559347200

https://imgur.com/a/rXnVBt6 - Capped by the Buyout of 62 Keys

Tartan Mini

https://backpack.tf/suggestion/5cefcf0267807246696668ef - 52.5 Keys

https://backpack.tf/item/2209480605

Sale 5) Sold for $114.23 when Keys were ~$1.82 each

https://marketplace.tf/items/tf2/30175;5;u62

https://marketplace.tf/items/tf2/5021;6

114.23 / 1.82 = 62.76, which rounds to 63 Keys

Sale 6) Quicksold for 52 Keys

https://backpack.tf/profiles/76561198247576962#!/compare/1559779200/1559865600

Sale 7) Sold for a Tesla Coil Lil' Bitey + 20 Keys

https://backpack.tf/profiles/76561198832602199#!/compare/1560556800/1560643200

https://imgur.com/a/qPg51DY - Buyout of 60 Keys

Fits in the range.

Bitey Mini

https://imgur.com/a/V03mXXw - 3 Buyers at 34 Keys makes the Bitey 35+ Keys

https://backpack.tf/u/76561198273681900

https://backpack.tf/u/76561198002757046

https://backpack.tf/u/76561198335791307

https://backpack.tf/item/7102934879

Sale 8) ?

https://backpack.tf/profiles/76561198256506344#!/compare/1561507200/1561593600

https://backpack.tf/profiles/76561198317802744#!/compare/1561507200/1561593600

Sale 9) Sold for 55 Keys

https://backpack.tf/profiles/76561198317802744#!/compare/1561852800/1562025600

https://backpack.tf/item/2564266285

Sale 10) Sold for 49 Keys to a Buy Order

https://backpack.tf/profiles/76561198126590077#!/compare/1558483200/1558656000

Sale 11) Sold for 61 Keys

https://backpack.tf/profiles/76561198080179568#!/compare/1560297600/1560384000

Sale 12) ?

https://backpack.tf/profiles/76561198284695064#!/compare/1560643200/1560729600

Sale 13) Sold for 55 Keys

https://backpack.tf/profiles/76561198832602199#!/compare/1561075200/1561161600