Hell of a drop, I must say.

Sold for 40 Keys

http://backpack.tf/profiles/76561198292242424#!/compare/1494460800/1494547200

Sold for a Miami Nights Samur-Eye(24 Keys), a Dead Presidents Slick Cut(14 Keys) and ~4.5 Keys in Sweets(42.5 Keys total, round to 43)

http://backpack.tf/profiles/76561198062399509#!/compare/1494028800/1494115200

http://backpack.tf/profiles/76561198292242424#!/compare/1494028800/1494115200

Sold for a Circling Peace Sign Tartan Spartan(27 Keys), an Australium Force-a-Nature(10 Keys) and 2 Keys(39 Keys total)

http://backpack.tf/profiles/76561198353651538#!/compare/1493251200/1493596800

http://backpack.tf/item/2619955607 Unsold for 2 Weeks at 41 Keys

http://imgur.com/a/XT8WB

39-43.

Credits to Mindacos for finding the proof. All I did was make the actual suggestion.