Thanks Mindacos :D

Sales 1-3

All Marketplace.tf sales

https://marketplace.tf/items/tf2/30004;5;u30

Jul 20: $47 / $1.81 = 25.97 keys - Unsure about the history though I was able to find a buyout for 25 keys: https://bot.tf/stats/listings/Y35N192E

Jul 28: $47 / $1.80 = 26.11 keys - Mastikhor's listing redirects to this history https://backpack.tf/item/2891370239, B/O of 28: https://bot.tf/stats/listings/4RGG3OE9

Aug 17: $56 / $1.83 = 30.60 keys = 31 keys, no history or buyout found.

Sale 4

Sold for 24 keys

https://backpack.tf/profiles/76561198832602199#!/compare/1559606400/1559692800

https://backpack.tf/profiles/76561198355092203#!/compare/1559606400/1559692800

Buyout matches: https://bot.tf/stats/listings/MLN1N2GY

Rest of these sales: https://backpack.tf/item/1782383593

Either bulk, qsold to bot buy order or untraceable.

(NEW SALES, thanks lemons)

https://backpack.tf/profiles/76561198107192699#!/compare/1567468800/1567641600

https://backpack.tf/profiles/76561198096856475#!/compare/1567555200/1567641600 - Sold for 27 Keys

https://backpack.tf/profiles/76561198229219288#!/compare/1569628800/1569715200 - Sold to a Quickbuyer for X Keys

https://backpack.tf/profiles/76561198160856661#!/compare/1569542400/1569628800 - Sold for 25 Keys (Fits range)

https://backpack.tf/profiles/76561198077555267#!/compare/1567814400/1567987200 - Bulky

Taking 24 - 27 keys