This hat has the economic activity of a refrigerator, aka, it rarely shifts ownership. I found two recent-ish sales, and one was a quicksell to scrap.tf, so it doesn't really even count, and they're both from the same hat, which is currently my hat. The other sale is when I bought it.

Sold for a 14.5~(13-16) key smoking archers sterling and 5 keys and 20.11 ref, equating to about 21 keys.

https://steamuserimages-a.akamaihd.net/ugc/852730190925541418/9904CD2E6391902750ECD730881D9CAE0E996D7D/

https://backpack.tf/profiles/76561198188039146#!/compare/1508716800/1508803200

That's it. That's all I got. If anyone has some other recent sales, feel free to supply them. Like I said, people rarely ever transfer ownership of this hat.