Sale 1:

https://backpack.tf/profiles/76561198437172792#!/compare/1524960000/1525046400

https://backpack.tf/profiles/76561198123435194#!/compare/1524787200/1524960000

https://imgur.com/a/CD7pNtH

Sold for 50 PUBG keys.

Unsure how to price these, so taking SCM prices.

https://steamcommunity.com/market/pricehistory/?country=US&currency=1&appid=578080&market_hash_name=EARLY%20BIRD%20KEY

Price of keys then was about 3.30 CAD

Tf2 keys at the same time were about 3.10 CAD.

Therefore, the conversion is roughly 3.1 / 3.3 = 0.94.

so 50 x 0.94 = 47 keys in TF2.

Sale 2:

https://backpack.tf/profiles/76561198123435194#!/compare/1525478400/1526428800

https://backpack.tf/profiles/76561198070775888#!/compare/1526342400/1526428800

Sold for Lantern Private Eye + 9 keys and negligible ref

Private Mini:

https://backpack.tf/suggestion/5b3d912e44325a67ed3d324b

Suggestion for 47.5 keys

Total is 56.5 keys

Sale 3:

https://backpack.tf/profiles/76561198070775888#!/compare/1526428800/1526515200

https://backpack.tf/profiles/76561198304138933#!/compare/1526428800/1526515200

Sold for 44 keys.

https://backpack.tf/item/281611028

Unsold for 70 for 4 months.

Taking 47 - 57 keys.