Sale 1:

Sold for 23 keys

https://backpack.tf/profiles/76561198135388328#!/compare/1753056000/1753142400 - Near ID: 15958108567

https://backpack.tf/profiles/76561198172611838#!/compare/1753056000/1753315200

https://backpack.tf/item/15887712562

= 23 keys

Sale 2:

Sold for 20 keys (Buyer’s end, first 20 keys from the 2nd row onwards)

https://backpack.tf/profiles/76561198163609625#!/compare/1755129600/1755216000

https://backpack.tf/profiles/76561198120107112#!/compare/1755043200/1755216000

https://backpack.tf/item/14056942396

= 20 keys

Sale 3:

Sold for 19 keys

https://backpack.tf/profiles/76561199026390261#!/compare/1756512000/1756598400 - Near ID: 16116500068

https://backpack.tf/profiles/76561198117597416#!/compare/1756598400/1756684800

https://backpack.tf/item/15538811763

= 19 keys

Sale 4:

Sold to STN for 17 keys + just over half a key in metal

https://backpack.tf/profiles/76561198035237398#!/compare/1752710400/1752883200 - Near ID: 15943307406

https://backpack.tf/profiles/76561199581722058#!/compare/1752710400/1752796800

https://backpack.tf/item/15431967720

This seller’s compare is mixed with 2 other separate trades, one of which also went to STN. The other conflicting item to STN appears to be the Smoking Sultan’s Ceremonial

https://backpack.tf/item/716974445

= 18 keys

Sale 5:

Sold to a bot for 17 keys + negligible metal

https://backpack.tf/profiles/76561198103756753#!/compare/1752969600/1753142400

https://backpack.tf/profiles/76561199674417290#!/compare/1752969600/1753056000

https://backpack.tf/item/14196892271

= 17 keys

Other Sales:

#1

https://backpack.tf/profiles/76561199072654974#!/compare/1755993600/1756080000

https://backpack.tf/profiles/76561198294800543#!/compare/1755907200/1756080000

https://backpack.tf/item/15538811763

Untraceable

#2

https://backpack.tf/profiles/76561198294800543#!/compare/1756425600/1756512000

https://backpack.tf/profiles/76561199026390261#!/compare/1756425600/1756512000

https://backpack.tf/item/15538811763

Untraceable, some metal matches

#3

https://backpack.tf/profiles/76561199581722058#!/compare/1752796800/1752883200

https://backpack.tf/profiles/76561198423993041#!/compare/1752796800/1752883200

https://backpack.tf/item/15431967720

Untraceable, next in history appears to have been gambling-related.

#4

https://backpack.tf/profiles/76561198192632255#!/compare/1754524800/1756425600

https://backpack.tf/profiles/76561198163609625#!/compare/1755043200/1755129600

https://backpack.tf/item/14056942396

Untraceable

https://backpack.tf/item/15629009098 - bot/owner

https://backpack.tf/item/15285700437 - marketplace

Sellers/Buyers:

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

https://backpack.tf/item/14196892271 - 25 keys

https://backpack.tf/item/15629009098 - 25 keys

https://backpack.tf/item/14912857367 - 25 keys

https://backpack.tf/item/15192326572 - 30 keys

1 bot buying for ~17.1 keys

https://marketplace.tf/items/tf2/31413;5;u3003

https://backpack.tf/item/14979666380 - $49.99

https://backpack.tf/item/15285700437 - $54.44

https://backpack.tf/item/15324011098 - $54.44

https://backpack.tf/item/15431967720 - $54.44

https://backpack.tf/item/14878045629 - $89.99

Sales at:

17

18

19

20

23

Excluding 17 due to the bot buying for 17.

Taking 18-23 keys.