Only useable sale. Hasn't resold in a month, not counting steam market sales.

Sold for 14 Keys

http://backpack.tf/profiles/76561198025605595?time=1417248000 -> http://backpack.tf/profiles/76561198025605595?time=1417387186

http://www.tf2outpost.com/trade/23904854

Sold in less than 2 Hours for $28.75 on the SCM(Not using the sale, but proving that this was the last time it sold)

http://i.imgur.com/b8E3C4u.png

http://backpack.tf/item/1648802405 Slug History(Same level, currently untradeable)

14 Keys should be fine.

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