Sold:

http://www.tf2outpost.com/trade/28680136

http://backpack.tf/profiles/76561198021055079#!/compare/1482796800/1482883200

http://backpack.tf/profiles/76561198127768920#!/compare/1482537600/1482969600

http://imgur.com/a/BjnSR - sold for 24 keys

Credits to Jarool

http://backpack.tf/profiles/76561198180162533#!/compare/1480377600/1480636800 - sold for Professional Killstreak Black Rose = 20 keys

http://backpack.tf/profiles/76561198246258110#!/compare/1480982400/1481068800

http://backpack.tf/profiles/76561198120147285#!/compare/1480982400/1481068800 - sold with 7 keys for Blizzardy Storm Berlin Brain Bowl = 26 keys

http://backpack.tf/profiles/76561198120147285#!/compare/1482451200/1482537600 - involved a Starstorm Insomnia Coldsnap Cap = ?

http://www.tf2outpost.com/trade/28664816

http://backpack.tf/profiles/76561198126480635#!/compare/1481932800/1482019200 - sold for Flaming Lantern Engineer's Cap = 25 keys b/o

Credits to ツ JoXu ツ Happy Holidays

http://backpack.tf/profiles/76561198139926072#!/compare/1482105600/1482192000 - sold with sweets for Starstorm Insomnia Wide-Brimmed Bandito + 2 keys = 15 keys (outlier)

Mini's:

Blizzardy Storm Berlin Brain Bowl:

http://backpack.tf/profiles/76561198184907303#!/compare/1478476800/1478563200 - sold for Bubbling Charmer's Chapeau + Dead Presidents Bear Necessities = 33 keys

Flaming Lantern Engineer's Cap:

http://backpack.tf/profiles/76561198085269574#!/compare/1481846400/1482019200 - sold for Dead Presidents Hat With No Name = 26 keys