Reverse-themed I guess.

Sold for a Dead Presidents Furious Fukaamigasa(14 Keys with Overpay) and 3 Keys(17 Keys total)

http://backpack.tf/profiles/76561198069441398?time=1432450800 -> http://backpack.tf/profiles/76561198069441398?time=1432537200

Sold for a Miami Nights Buckaroos Hat(14 Keys with Overpay, Outlier)

http://backpack.tf/profiles/76561198042938501?time=1432450800 -> http://backpack.tf/profiles/76561198042938501?time=1432537200

http://backpack.tf/profiles/76561198150295575?time=1432450800 -> http://backpack.tf/profiles/76561198150295575?time=1432537200

Sold for a Kill-a-Watt Stately Steel Toe(13.5 Keys with Overpay) and an Orbiting Planets Hottie's Hoodie(9.5 Keys with Overpay)(23 Keys total)

http://backpack.tf/profiles/76561198061822695?time=1428093262 -> http://backpack.tf/profiles/76561198061822695?time=1428303600

Sold for a Miami Nights Broadband Bonnet(22 Keys with Overpay) and a Smoking Officer's Ushanka(12 Keys with Overpay)(34 Keys total, Outlier)

http://backpack.tf/profiles/76561198061822695?time=1428303600 -> http://backpack.tf/profiles/76561198061822695?time=1426143600

14 is low, 31 is high. 17-23 Keys should be fine.

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