History 1: https://backpack.tf/item/3903552368

Item appears to have sold on marketplace.tf but there are no logged sales of it on the site

https://marketplace.tf/items/tf2/200;0;strange

History 2: https://backpack.tf/item/3903468267

Untrace

https://backpack.tf/profiles/76561198030343929#!/compare/1594425600/1594512000

https://backpack.tf/profiles/76561198079293438#!/compare/1594339200/1594512000

History 3: untrace: https://backpack.tf/item/3902989666

https://backpack.tf/profiles/76561198082050096#!/compare/1597708800/1597881600

https://backpack.tf/profiles/76561198069286674#!/compare/1597708800/1597881600

History 4: https://backpack.tf/item/3903777273

Transaction between 2 Marketplace.tf bots

I found some sales on Marketplace.tf

Festivized, no ks https://marketplace.tf/items/tf2/200;0;strange;festive

(Untraceable) August 5 2020: $450 (key=$1.90, 236.84 keys) ~237 keys

Spec KS: https://marketplace.tf/items/tf2/200;0;strange;kt-2

(Untraceable) July 17 2020: $3.99 (key=$1.97, 202.54 keys) ~203 keys

We have 203-237. For the sake of everyone's eyes, gonna round to 200-240

Going with 200-240 keys