I have this part on my amby and huntsman

Only 1 page in Outpost

http://www.tf2outpost.com/trade/17029374

-Sold without a bump for 3 keys

http://www.tf2outpost.com/trade/17018467

-Sold in under 6 hours for 3 keys

http://www.tf2outpost.com/trade/17002907

-Sold without a bump for 3 keys

3.1 (3 keys and 1 ref)

http://www.tf2outpost.com/trade/17008935

http://www.tf2outpost.com/trade/9478379 - was sold out at 3 keys and 1 ref. Now selling for 4 ref

3.3 sales

http://www.tf2outpost.com/trade/14928920 - Offered 3.3 keys.

http://www.tf2outpost.com/trade/16715237

http://www.tf2outpost.com/trade/17018567

http://www.tf2outpost.com/trade/16978068

4 keys sales

http://www.tf2outpost.com/trade/17011701

http://www.tf2outpost.com/trade/16939397

Buyers

3 keys

http://www.tf2outpost.com/trade/17001931

http://www.tf2outpost.com/trade/17034869

http://www.tf2outpost.com/trade/16866883

Feel free to counter / support my proof. Vote based on proof presented, not blindly!