2 in existence. 1 on market

There wasn't any other recent sale on the other one http://backpack.tf/item/3337290778

"Any hat can be priced based on a single sale if ALL these criteria are met:

- There are no other recent sales in the last 3 months

- The hat went to a collector or person who intends to keep the hat. A collector can be identified by looking at the person's trade history, item history of similar unusuals in the backpack OR if the owner has not resold the hat 1 month after the sale occurred."

Sale

http://backpack.tf/profiles/76561198058546745?time=1442214000&compare=1442300400

http://backpack.tf/profiles/76561198017901187?time=1442214000&compare=1442300400

http://www.tf2outpost.com/item/440,4135122702,179,5 (missing piece, thanks to Marty Birdman ), instead of 17 keys

Sold for a Peace Sensei + Aces Tricorne + 2 Law strangifiers. Not applying double overpay on Unus.

x = 30 + 17 + 6*0.9 = 52 keys flat price

Mini on Sensei ~ 30 keys :

http://backpack.tf/profiles/76561198059448273?time=1443078000&compare=1443250800 33 keys after overpay

http://backpack.tf/profiles/76561198157197123?time=1443423600&compare=1443337200 27 keys

(Seller : http://www.tf2outpost.com/trade/27357248 set for 50 keys -> B/O Sensei ~ 32.5)

Mini on the Tricorne ~ 17 keys :

Sold for 17 pure according to the 1st history's comparison

http://backpack.tf/profiles/76561198107767124?time=1441695600&compare=1441782000 17 keys after overpay

Any pertinent comments are welcome.