Ah. Much easier.

http://backpack.tf/item/3626732953

Sale 1) Sold for a T-Watt Beak (65 Keys)

http://backpack.tf/profiles/76561198090694350?time=1433660400&compare=1433401200

Beak Mini

http://backpack.tf/profiles/76561198090694350?time=1433833200&compare=1433919600 --- Sold for 65 Keys

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Sale 2) Sold for a Vivid Danger (60 Keys)

http://backpack.tf/profiles/76561198068204554?time=1436338800&compare=1436684400

http://www.tf2outpost.com/trade/26290619 --- Headsplitter was Offered

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Sale 3) Sold for an Orb. Fire KE (67) + Spec KS Gold BK Sniper Mk.II (~3)

http://backpack.tf/profiles/76561198102805459?time=1438930800&compare=1439017200

70 * 0.9 = 63 Keys