Side quest, was doing a different sugg and Shuffle, while helping me with it noticed some freebies within it.

https://backpack.tf/item/3340299476

Sale 1) Sold for a Gravelly Ghoul Misfortune Fedora + 10 Keys

https://backpack.tf/profiles/76561199039289574#!/compare/1604188800/1604361600

https://backpack.tf/profiles/76561198150761393#!/compare/1604275200/1604361600

This sale is being used for the Fedora

Sale 2) Sold for 140 Keys

https://backpack.tf/profiles/76561198150761393#!/compare/1605312000/1605398400

Sale 3) Sold for 140 Keys

https://backpack.tf/profiles/76561198002757046#!/compare/1605312000/1605398400

https://backpack.tf/item/3626575546

Sale 4) Sold for $260 when Keys were ~$1.866 each

https://marketplace.tf/items/tf2/30394;5;u17

260 / 1.866 = 139.34, which can be rounded to 140 Keys

Sale 5) Gambled

https://backpack.tf/profiles/76561198864760524#!/compare/1602115200/1602201600

https://backpack.tf/profiles/76561198930489578#!/compare/1602028800/1602201600

Sale 6) Gambled

https://backpack.tf/profiles/76561198930489578#!/compare/1602028800/1602201600

https://backpack.tf/profiles/76561198879171251#!/compare/NaN/1602979200