History 1: https://backpack.tf/item/8384721888

Bulk

https://backpack.tf/profiles/76561198260201158#!/compare/1599436800/1603411200

https://backpack.tf/profiles/76561198080250669#!/compare/1597190400/1599523200

History 2: https://backpack.tf/item/8361235275

Untraceable sale:

https://backpack.tf/profiles/76561198139802454#!/compare/1597968000/1599609600

https://backpack.tf/profiles/76561198042071762#!/compare/1599177600/1599955200

Marketplace.tf sales: https://marketplace.tf/items/tf2/1015;5;u3032

(Untraceable) September 6: $40/1.83=21.86 ~22 keys

https://backpack.tf/item/2928622970 October 14: $20/1.86=10.75 ~11 keys

no buyout https://bot.tf/stats/listings/Y8N0G689

https://backpack.tf/item/1526045562 October 21: $40/1.85=21.62 ~22 keys

no buyout https://bot.tf/stats/listings/4K00RLR8

Excluding 22 because the seller at 15 has been there for 2 months https://backpack.tf/item/9203493563

The seller at 11 was also listed since August before selling theirs, the third sale must have just been a lucky sale since there were sellers at 15 and 20 when it happened

Going 11 flat