History 1: https://backpack.tf/item/10454870133

11 keys:

https://backpack.tf/profiles/76561199106931116#!/compare/1633478400/1633564800

https://backpack.tf/profiles/76561198267776826#!/compare/1632614400/1634256000

matches Glad.tf stats https://gladiator.tf/sales?item=Circling%20Peace%20Sign%20Reel%20Fly%20Hat&at=2021-10-30T19:31:28.349Z

History 2: https://backpack.tf/item/10988715505

Dumped to STN:

https://backpack.tf/profiles/76561199031491993#!/compare/1633305600/1634515200

https://backpack.tf/profiles/76561198311498888#!/compare/1633219200/1633305600

Nothing matches but the purchase was likely 5 keys 62 ref https://stntrading.eu/item/tf2/Unusual+Circling+Peace+Sign+Reel+Fly+Hat

Bought in bulk:

https://backpack.tf/profiles/76561198311498888#!/compare/1638144000/1638230400

https://backpack.tf/profiles/76561197986669128#!/compare/1638144000/1638230400

Buyout of 9 keys 42 ref https://stntrading.eu/item/tf2/Unusual+Circling+Peace+Sign+Reel+Fly+Hat

Dumped to a bot within a day for 8 keys 10 ref:

https://backpack.tf/profiles/76561197986669128#!/compare/1638144000/1638230400

https://backpack.tf/profiles/76561199125443371#!/compare/1638144000/1638230400

https://gladiator.tf/sales?item=Circling%20Peace%20Sign%20Reel%20Fly%20Hat&at=2021-11-30T19:32:48.327Z

~~

https://marketplace.tf/items/tf2/31186;5;u18

$30 / $1.83 = 16.39 keys ~16 keys

Seller at 14 for <1 day https://backpack.tf/item/10988715505

Sales at ~6 (potential), 8, ~10 (potential), 11, 16

Even though the seller at 14 is young, 16 still looks out of place with all those lower sales

6, traceable or not, is too low with buyers at ~8, but I think including 8 is reasonable to account for the lower data points

Taking 8-11 keys