Sold:

http://backpack.tf/profiles/76561198137727518#!/compare/1477094400/1477267200 - sold with Strange Specialized Killstreak Australium Ambassador for Hot Killstreak Flower Power Scattergun (Minimal Wear) = 58 keys (outlier)

http://backpack.tf/profiles/76561198086659946#!/compare/1476748800/1478217600 - sold with Strange Specialized Killstreak Australium Ambassador + 3 keys for Cauldron Bubbles Whoopee Cap + sweets = 17 keys

http://www.tf2outpost.com/trade/28578770

http://backpack.tf/profiles/76561198114545227#!/compare/1482451200/1482537600

http://backpack.tf/profiles/76561198314140859#!/compare/1479945600/1482710400 - sold for 19 keys

Credits to Jarool

Mini's:

Hot Killstreak Flower Power Scattergun (Minimal Wear):

http://backpack.tf/profiles/76561198047686236#!/compare/1480636800/1481155200 - sold for Hellfire Armored Authority + Hot Blitzkrieg SMG (Field-Tested) = 83 keys

http://backpack.tf/profiles/76561198125329673#!/compare/1480377600/1480464000 - sold for Infernal Smoke Taunt: The Box Trot = 59 keys

taking 59-83 keys