This 1 Key drop is absolutely necessary.

Sold for a Roboactive Dead Cone(39 Keys with Overpay), a Stormy 13th Hour Bonk Helm(43 Keys with Overpay), an Australium Spec KS Wrench(~23 Keys with Overpay at the time) and an Australium Spec KS Ambassador(~17 Keys with Overpay at the time)(122 Keys total)

http://backpack.tf/profiles/76561198134951637?time=1424668132 -> http://backpack.tf/profiles/76561198134951637?time=1424678400

Only useable sale, 122 Keys should be fine.

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