One here.

SALE 1

Sold for 16 keys

https://backpack.tf/profiles/76561198167818506#!/compare/1559174400/1559347200

https://backpack.tf/profiles/76561198334598690#!/compare/1559260800/1559347200

SALE 2

Sold for 14 keys + 2 refined

https://backpack.tf/profiles/76561198127468114#!/compare/1563321600/1563494400

https://backpack.tf/profiles/76561198311498888#!/compare/1563408000/1563494400

Rounds down to 14 keys

SALE 3

Massive bulk sale

https://backpack.tf/profiles/76561198311498888#!/compare/1564099200/1564185600

https://backpack.tf/profiles/76561198029074524#!/compare/1564099200/1564185600

SALE 4

Unknown, I assume scm though

https://backpack.tf/profiles/76561198262111775#!/compare/1560124800/1561075200

https://backpack.tf/profiles/76561198939522547#!/compare/1558396800/1563840000

SALE 5

Unknown

https://backpack.tf/profiles/76561198262111775#!/compare/1560124800/1561075200

https://backpack.tf/profiles/76561198337734785#!/compare/1560988800/1561075200

MARKETPLACE SALES

30 on june 7 (30 / 1.8 = 16.66 rounding to 17 keys)

28.99 on june 23 (28.99 / 1.83 = 15.84 rounding to 16 keys)

24.81 on august 8 (24.81 / 1.82 = 13.63 rounding to 14 keys)

https://marketplace.tf/items/tf2/701;5;u59

CLASSIFIEDS

https://gyazo.com/3858ef3c4e8e571b967f1aae444d186d

Sales at 14 and 16. Marketplace sales at 14, 16, and 17.

Taking 14-17 keys.