Finally done with this thing.

Sold for a Green Energy Janissary Ketche(28 Keys with Overpay)

http://backpack.tf/profiles/76561198042982540?time=1442818800

http://backpack.tf/profiles/76561198042982540?time=1442905200

Sold for a Cloud 9 Hermes(25 Keys with Overpay)

http://backpack.tf/profiles/76561198110156301?time=1442905200

http://backpack.tf/profiles/76561198110156301?time=1442991600

Sold for a Nuts & Bolts Professor's Peculiarity(24 Keys with Overpay)

http://backpack.tf/profiles/76561198042982540?time=1442214000

http://backpack.tf/profiles/76561198042982540?time=1442300400

http://backpack.tf/profiles/76561198102211716?time=1442127600

http://backpack.tf/profiles/76561198102211716?time=1442300400

http://www.tf2outpost.com/item/440,4132787648,384,5 Professor's History

Sold for a Potassium Bonnet(18 Keys with Overpay at the time) and ~9 Keys in Sweets(8 Keys with Overpay)(26 Keys total)

http://backpack.tf/profiles/76561198221561748?time=1442732400

http://backpack.tf/profiles/76561198221561748?time=1442905200

http://backpack.tf/profiles/76561198023624951?time=1442646000

http://backpack.tf/profiles/76561198023624951?time=1442905200

Sales seem to fit, 24-28 Keys should be fine.

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