Sale #1:

Sold for a Neutron Star Brown Bomber:

https://backpack.tf/profiles/76561198307849184#!/compare/1509062400/1509148800

https://backpack.tf/profiles/76561198090520837#!/compare/1509062400/1509148800

B/O was 50 Keys: (Thanks to Eazy Peazy Squeezy Lemons)

http://www.tf2outpost.com/trade/29388617

Total: 50 keys

Sale #2:

Sold with a Ghastly Ghosts Jr Classy Capper for a Holy Grail Second Rate Sorcery:

https://backpack.tf/profiles/76561198307849184#!/compare/1510272000/1510358400

Not usable

Sale #3:

Sold for a '72 Kazotsky Kick:

https://backpack.tf/profiles/76561198119198857#!/compare/1510358400/1510444800

Not usable, inflated taunt

I could not find a suitable mini suggestion for the Neutron Star Brown Bomber:

https://backpack.tf/profiles/76561198118254940#!/compare/1508716800/1509148800

Sold for a Fountain of Delight Party Trick, inflated taunt

https://backpack.tf/profiles/76561198170259974#!/compare/1505865600/1508025600

Can't be traced

https://backpack.tf/classifieds?item=Texas%20Tin-Gallon&quality=5&tradable=1&craftable=1&australium=-1&particle=84&killstreak_tier=0

Seller is now selling for 40 keys:

http://www.tf2outpost.com/trade/29436975