Marketplace Sales:

https://marketplace.tf/items/tf2/30394;5;u60

$37, Jan 21st

$38, Jan 23rd

$37, Jan 23rd

$35, Feb 19th

$30, Feb 21st

https://backpack.tf/item/8388090934 - Feb 19th

https://bot.tf/stats/listings/M0WGJPEM - No important B/O, can’t really tell who the seller is.

http://manic.tf/keyprice?at=2020-02-19&price=35 - $35 / $1.75 = 20.00 keys

https://backpack.tf/item/7956320764 - one of the marketplace sales, can’t find the exact one.

Can’t determine remaining histories.

http://manic.tf/keyprice?at=2020-01-21&price=37 - $37 / $1.78 = 20.79 keys

https://bot.tf/stats/listings/M1N6R20Y - no important B/O

http://manic.tf/keyprice?at=2020-01-23&price=38 - $38 / $1.78 = 21.35 keys

https://manic.tf/keyprice/?at=2020-01-23&price=37 - $37 / $1.78 = 20.79 keys

https://bot.tf/stats/listings/YDVLPZVY - No important B/O

http://manic.tf/keyprice?at=2020-02-21&price=30 - $30 / $1.76 = 17.05 keys

https://bot.tf/stats/listings/M0WGJPEM - No important B/O

After rounding, we have:

21 keys (3x)

Other Sales:

https://backpack.tf/item/7956320764 (#1, ignored gambling, marketplace sale mentioned above)

https://backpack.tf/item/8388090934 - gambed, marketplace sale included above

https://backpack.tf/item/7956713693 - mannco

https://backpack.tf/item/7815162029 - gambled

#1

Untraceable

https://backpack.tf/profiles/76561198137588808#!/compare/1581724800/1582329600

https://backpack.tf/profiles/76561198363395191#!/compare/1582243200/1582329600

Sellers & Buyers:

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

https://backpack.tf/item/7956024659 - 26 keys

Highest buyer at ~11.5

Sales at:

17

20

21 (3x)

Taking 17-21.