Resuggestion: https://backpack.tf/suggestion/5dfa4d831ffee9034271e99a

https://backpack.tf/profiles/76561198131985469#!/compare/1571270400/1571356800

https://backpack.tf/profiles/76561198086282088#!/compare/1571270400/1571356800

Sold for many hats, the 48 hat stack in the first compare link

19 Patriot Peak = ~399.95 refined

9 Shin Shredders = ~84.47 refined

8 Chicago Overcoat = ~159.52 refined

7 A Hat to Kill For = ~80.85 refined

4 Diplomat = ~71.76 refined

1 Medical Monarch = 10.61 refined

= 807.16 / 50.77 per key = ~16 keys

And the Skullcracker unusualifier was involved https://backpack.tf/item/8154378649

Unusualifier is 8 keys https://backpack.tf/suggestion/5e00f51d57f0241815394752

No buyout was found.

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https://backpack.tf/profiles/76561198086282088#!/compare/1572307200/1572652800

https://backpack.tf/profiles/76561198067893369#!/compare/1572393600/1572566400

Should be used on the Clairvoyance Strange Airdog

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https://backpack.tf/profiles/76561198857084338#!/compare/1573084800/1575936000

https://backpack.tf/profiles/76561198101092551#!/compare/1572998400/1573084800

Using there

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https://backpack.tf/profiles/76561198101092551#!/compare/1572825600/1572912000

https://backpack.tf/profiles/76561198067893369#!/compare/1572825600/1572912000

Should be used on the Brain Interface

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i go 24 keys