Sellers:

http://imgur.com/a/kaO8Z

https://backpack.tf/item/5152109256 - b/o: 23 keys

http://imgur.com/a/HnLtz - young seller at 19-20 keys

Sold:

https://backpack.tf/profiles/76561198079578383#!/compare/1492560000/1492646400 - sold for Circling Heart Airdog = 25 keys

https://backpack.tf/profiles/76561198088822281#!/compare/1491609600/1491696000 - sold for Haunted Ghosts Furious Fukaamigasa = 25 keys

https://backpack.tf/profiles/76561198088822281#!/compare/1489190400/1489276800 - sold with 2 keys for Disco Beat Down Bear Necessities = 23 keys

http://www.tf2outpost.com/trade/28825871

https://backpack.tf/profiles/76561198118921483#!/compare/1489190400/1489276800 - sold with 6 keys for Infernal Flames Taunt: The Carlton (27) = 21 keys b/o

https://backpack.tf/profiles/76561198011321852#!/compare/1489104000/1489190400

https://backpack.tf/profiles/76561198118921483#!/compare/1489104000/1489190400 - sold with 10 keys for Vivid Plasma Herald's Helm = 30 keys (outlier)

Mini's:

Circling Heart Airdog:

https://backpack.tf/profiles/76561198079578383#!/compare/1492646400/1492732800

https://backpack.tf/profiles/76561198118111737#!/compare/1492646400/1492732800 - sold for Blizzardy Storm Towering Pillar of Hats = 25 keys

Haunted Ghosts Furious Fukaamigasa:

https://backpack.tf/profiles/76561198088822281#!/compare/1491868800/1491955200 - sold for Memory Leak Soldered Sensei = 25 keys

Previous Suggestion: http://backpack.tf/suggestion/591fa2ad0e2cad594d703805