Sale 1:

Sold with over a key in items for a Strange Minimal Wear High Roller’s Rocket Launcher (59.5)

https://backpack.tf/profiles/76561198139627699#!/compare/1735257600/1735344000

https://backpack.tf/profiles/76561198114125480#!/compare/1734652800/1735344000

https://backpack.tf/item/15014017266

= 58 keys

Sale 2:

Sold for 35 keys

https://backpack.tf/profiles/76561198249092828#!/compare/1729728000/1733529600

https://backpack.tf/profiles/76561198191137318#!/compare/1733443200/1733529600

https://backpack.tf/item/15059332879

= 35 keys

Sale 3:

Sold to STN for 33 keys + 1 ref

https://backpack.tf/profiles/76561198191137318#!/compare/1729900800/1729987200

https://backpack.tf/profiles/76561199026390261#!/compare/1729900800/1729987200

https://backpack.tf/item/15003305825

= 33 keys

Other Sales:

#1

https://backpack.tf/profiles/76561198259528152#!/compare/1730160000/1730246400

https://backpack.tf/profiles/76561198139627699#!/compare/1730073600/1730246400

https://backpack.tf/item/15052535016

Bulk/untraceable

#2

https://backpack.tf/profiles/76561198107352643#!/compare/1732320000/1733443200

https://backpack.tf/profiles/76561199189814852#!/compare/1732492800/1732665600

https://backpack.tf/item/15039214672

Untraceable

#3

https://backpack.tf/profiles/76561198259528152#!/compare/1730505600/1730592000

https://backpack.tf/profiles/76561198139627699#!/compare/1730505600/1730678400

https://backpack.tf/item/15014017266

Bulk/untraceable

#4

https://backpack.tf/profiles/76561199026390261#!/compare/1731196800/1731283200

https://backpack.tf/profiles/76561198191137318#!/compare/1729296000/1729382400

https://backpack.tf/item/15003305825

Untraceable

#5

https://backpack.tf/profiles/76561198799393975#!/compare/1729123200/1729209600

https://backpack.tf/profiles/76561198046574336#!/compare/1729209600/1729296000

https://backpack.tf/item/14996707175

Untraceable

#6

https://backpack.tf/profiles/76561198139627699#!/compare/1730073600/1730246400

https://backpack.tf/profiles/76561198046574336#!/compare/1730160000/1730246400

https://backpack.tf/item/15002694162

Sold for Haunting Haze Cleaner’s Cap

The only sale I found on the Cleaner’s Cap values it at ~150 keys

https://backpack.tf/profiles/76561198139627699#!/compare/1730678400/1730764800

https://backpack.tf/profiles/76561198124799470#!/compare/1730678400/1730764800

Sellers:

https://i.imgur.com/rGcmWRT.png

https://backpack.tf/item/15039214672 - 90 keys

https://backpack.tf/item/15059332879 - 100 keys

https://backpack.tf/item/15002694162 - 100 keys

https://backpack.tf/item/15052535016 - 150 keys

Sales at:

33

35

58

https://i.imgur.com/PbbkvMx.png - the STN sale in #4 was most likely ~40 keys, but I can’t confirm this.

Taking 33-58 keys.