Missed something

https://backpack.tf/item/1699869840

Sale 1) Sold + Duped Nuts and Bolts Crocleather Slouch (8 Keys) for a Green Energy Attendant (58.5 Keys)

https://backpack.tf/profiles/76561198100773215#!/compare/1494288000/1494460800

58.5 - 8 = 50.5, which I'll round to 50 Keys

Crocleather: https://backpack.tf/item/1316153004

Attendant: https://backpack.tf/item/335946633

Crocleather Mini

https://backpack.tf/profiles/76561198328390406#!/compare/1496275200/1496361600 - Sold for 8 Keys

https://backpack.tf/profiles/76561198328390406#!/compare/1496448000/1496620800 - Sold for 8 Keys + 9 Refined

Taking 8 Keys as a common trade point.

Sale 2) Sold for a Duped Circling Heart Vintage Merryweather (42 Keys) + ~4 Keys of Items

https://backpack.tf/profiles/76561198084447725#!/compare/1494892800/1494979200

42 + 4 = 46 Keys

Merryweather Mini

https://backpack.tf/profiles/76561198086948995#!/compare/1494288000/1494374400 - Sold for a Terror-Watt Lucky Shot (24 Keys) + Insomnia Razor Cut (23 Keys)

Not counting duped higher than clean, so I'll take the 4-Day-Old clean price of 42 Keys.

http://www.tf2outpost.com/trade/29262727 - Seller at 40 Keys