The Sale:

Sold for 45 keys

Seller:https://backpack.tf/profiles/76561198021055079#!/compare/1600387200/1600473600

Buyer: https://backpack.tf/profiles/76561198163116031#!/compare/1600387200/1600473600

https://backpack.tf/item/1555091885

https://i.imgur.com/VFW0AuL.png

45 keys

Marketplace Sales:

https://marketplace.tf/items/tf2/605;5;u34

$89, September 6th

$89, September 12th

http://manic.tf/keyprice?at=2020-09-06&price=89 - $89 / $1.83 = 48.63 keys

http://manic.tf/keyprice?at=2020-09-12&price=89 - $89 / $1.88 = 47.34 keys

Couldn't confirm histories for either sales.

After rounding, we have:

49 keys

Other Sales:

https://backpack.tf/item/1846441000 (#1 & #2)

https://backpack.tf/item/1356422251 (#3)

https://backpack.tf/item/1343307381 (#4)

https://backpack.tf/item/1571145261 - marketplace

#1

Untraceable

https://backpack.tf/profiles/76561198282751347#!/compare/1598054400/1598745600

https://backpack.tf/profiles/76561198308772967#!/compare/1598313600/1598832000

#2

Untraceable

https://backpack.tf/profiles/76561198308772967#!/compare/1598832000/1598918400

https://backpack.tf/profiles/76561198025030539#!/compare/1599350400/1600646400

#3

Untraceable, probably bulk for pure or something

https://backpack.tf/profiles/76561198138173718 - private, can't update

https://backpack.tf/profiles/76561197971229757#!/compare/1599696000/1599782400

#4

Untraceable

https://backpack.tf/profiles/76561198163116031#!/compare/1596153600/1596585600

https://backpack.tf/profiles/76561198839446454#!/compare/1599264000/1599350400

Missing info in the history most likely

https://i.imgur.com/HeWI6X8.png - labelled as ~33 keys

#5

Untraceable

https://backpack.tf/profiles/76561198839446454#!/compare/1599264000/1599350400

https://backpack.tf/profiles/76561198217101891#!/compare/1599350400/1600473600

Could've been a marketplace sale

Sellers:

https://i.imgur.com/8yPLau4.png

https://backpack.tf/item/1356422251 - 45 keys

Sales at:

45

47

49

Taking 45-49.