Finally getting this thing priced.

Sold for an Orbiting Fire Magnificent Mongolian(10 Keys with Overpay)

http://backpack.tf/profiles/76561198143415957?time=1417766400 -> http://backpack.tf/profiles/76561198143415957?time=1417915337

Sold for an Australium Spec KS SMG(~12 Keys with Overpay)

http://backpack.tf/profiles/76561198130245435?time=1414479600 -> http://backpack.tf/profiles/76561198130245435?time=1414713384

Sold for a Miami Nights Gym Rat(10 Keys with Overpay)

http://backpack.tf/profiles/76561198043919131?time=1414825200 -> http://backpack.tf/profiles/76561198043919131?time=1415347200

Although 10 Keys seems common, 12 Keys doesn't seem too farfetched. 10-12 Keys should be fine.

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