This one has been exchanged a lot of times

Sale 1:

Sold for C9 Pampered(14) + KS Gold Botkiller Rocket w/ Parts(5)

http://backpack.tf/profiles/76561198004572519?time=1446451200

http://backpack.tf/profiles/76561198004572519?time=1447315200

=19 Keys

(OP histories match. It went to Kostek, which instantly resold it for something idk)

Pampered:

Sold for Spec Aus Amby(16):

http://backpack.tf/profiles/76561198004572519?time=1448438400

http://backpack.tf/profiles/76561198004572519?time=1448697600

=16 Keys

Sale 2:

Sold for Duped Steaming Handle(9) + 12 Keys in sweets:

http://backpack.tf/profiles/76561198107364879?time=1447574400

http://backpack.tf/profiles/76561198107364879?time=1447660800

=21 Keys

Any unusual can sell easily for 8 Keys Pure, but this (garbage)handle can't be more than 10, so using 9.

Sale 3:

Sold for Blizz Samureye(18)

http://backpack.tf/profiles/76561198124235921?time=1447920000

http://backpack.tf/profiles/76561198124235921?time=1448006400

=18 Keys

Sale 4:

Sold with 4 Keys in sweets for Duped Planets Lid(16) + SF Ks Rifle With Parts(12)

http://backpack.tf/profiles/76561198061881416?time=1448092800

http://backpack.tf/profiles/76561198061881416?time=1448352000

=24 Keys

Lid:

Sold for Steaming Larrikin + 6 Keys in sweets:

http://backpack.tf/profiles/76561198066524940?time=1448352000

http://backpack.tf/profiles/76561198066524940?time=1448438400

=18 Keys

Final Range 18-24