https://marketplace.tf/items/tf2/107;5;u33

Dec 20

39.99/1.75~23 keys

https://backpack.tf/profiles/76561198057424888#!/compare/1732665600/1735344000

https://backpack.tf/profiles/76561198113190503#!/compare/1734220800/1735257600

26 keys

46-20=26 (another hat was sold for 20, proof below)

https://backpack.tf/profiles/76561198930116758#!/compare/1734048000/1736294400

https://backpack.tf/profiles/76561198086011812#!/compare/1730246400/1730419200

Untraceable

https://backpack.tf/profiles/76561198062747535#!/compare/1729900800/1729987200

https://backpack.tf/profiles/76561198259209366#!/compare/1729900800/1729987200

Untraceable, compares for that hat are strange

https://backpack.tf/profiles/76561198259209366#!/compare/1729728000/1729814400

https://backpack.tf/profiles/76561198197503446#!/compare/1724371200/1729814400

Untraceable

Thx spy -

https://backpack.tf/profiles/76561198113190503#!/compare/1734220800/1735257600

https://backpack.tf/profiles/76561197995314222#!/compare/1735257600/1735344000

The Massed Flies HWNN and Baker Boy were not sold to the same person (as can be seen in the compare links). In the 2nd compare link, it's clear the HWNN was bought for 20 keys, which makes the Baker Boy 26 in this sale.