One of these.

Sold for 16 Keys

http://backpack.tf/profiles/76561198089932184?time=1446624000 (November 4th)

http://backpack.tf/profiles/76561198089932184?time=1447660800 (November 16th)

http://backpack.tf/profiles/76561198125884328?time=1447142400 (November 10th)

http://backpack.tf/profiles/76561198125884328?time=1447401600 (November 13th)

http://www.tf2outpost.com/trade/27074923

Sold for a Green Confetti Grenadier's Softcap(13.5 Keys with Overpay) and a Bill's Hat(~2.5 Keys at the time)(16 Keys total)

http://backpack.tf/profiles/76561198123206870?time=1447488000 (November 14th)

http://backpack.tf/profiles/76561198123206870?time=1447833600 (November 18th)

http://backpack.tf/profiles/76561198129781465?time=1447747200 (November 17th)

http://backpack.tf/profiles/76561198129781465?time=1447833600 (November 18th)

Two sales, 16 Keys should be fine.

Additional Proof/Counter-Proof/Constructive Criticism/Feedback is always appreciated.