Marketplace Sales:

https://marketplace.tf/items/tf2/30981;5;u17

https://backpack.tf/item/6768388436 October 10 - $245 = 136 keys

October 28 - $200 = 111 keys, I could not find the item history.

https://bot.tf/stats/listings/4OVD22RQ 135 key buyout for the 136 key sale

https://bot.tf/stats/listings/MLR85PXO

https://bot.tf/stats/listings/4RGN7XL9

https://bot.tf/stats/listings/425GD7LZ

Sale2

https://backpack.tf/profiles/76561198084708697#!/compare/1570233600/1570320000

Sold from Birka to Arcanatxt because Birka's buyout disappears and it gets sold on marketplace

https://bot.tf/stats/listings/46N0K92L https://bot.tf/stats/listings/YDL7EZ8L

https://backpack.tf/profiles/76561198056793444#!/compare/1570233600/1570320000

Quicksold to Arcanatxt for 70 keys, confirmation is here

https://backpack.tf/suggestion/5db08ae867807211c50a2b96

Sale3;

https://backpack.tf/profiles/76561198084708697#!/compare/1567900800/1567987200

https://backpack.tf/profiles/76561198076259234#!/compare/1567641600/1567987200

Sold for Burning Sammy Cap

Buyout of 150 keys https://bot.tf/stats/listings/4W692PWZ

https://backpack.tf/suggestion/5db08ad2d381727aaa1f13f5 Sammy Cap updating to ~138 keys