Selling:

http://www.tf2outpost.com/trade/28435795 - b/o: 40 keys (2 months)

http://www.tf2outpost.com/trade/28594024 - b/o: 40 keys (3 days)

Sold:

http://www.tf2outpost.com/trade/28563158

https://gyazo.com/60b1e748ec8bf07c97f7b6f1c6644b27 - sold for 37 keys

Credits to ツ JoXu ツ

https://gyazo.com/e5bd66df94a36f2c8d9d3ba2f4b009fe - sold for 33 keys

Credits to ツ JoXu ツ

http://backpack.tf/profiles/76561198218393641#!/compare/1478476800/1478563200 - sold for duped Haunted Ghosts Noble Amassment of Hats = 33 keys

http://www.tf2outpost.com/trade/28222951

http://backpack.tf/profiles/76561198072266128#!/compare/1473033600/1473120000 - sold with Strange Specialized Killstreak Australium Scattergun for Green Energy Sergeant's Drill Hat + 23 keys = 47 keys (outlier)

Mini's:

duped Haunted Ghosts Noble Amassment of Hats:

http://backpack.tf/profiles/76561197963500354#!/compare/1478476800/1478563200 - sold for 33 keys

Green Energy Sergeant's Drill Hat:

http://backpack.tf/profiles/76561198133163345#!/compare/1477008000/1477094400 - sold with Blizzardy Storm Reggaelator for Anti-Freeze Jumper's Jeepcap = 51 keys