Cover Blown

https://backpack.tf/item/1657721424

Sale 1) Sold for a Tesla Coil L'Inspecteur (38 Keys)

https://backpack.tf/profiles/76561198148836514#!/compare/1551657600/1551744000

https://backpack.tf/profiles/76561197994783413#!/compare/1551657600/1551744000

High outlier.

L'Inspecteur Mini

https://backpack.tf/profiles/76561198047941585#!/compare/1551571200/1551744000 - Sold + 9 Keys for a Vivid Plasma Millennial Mercenary (46 Keys)

https://backpack.tf/profiles/76561197994783413#!/compare/1551657600/1551744000 - Sold for a Starstorm Slumber Hat of Cards (39 Keys)

Hat of Cards Micro

https://marketplace.tf/items/825;5;u110 - Sold for $70 when Keys were ~$1.80 each

https://marketplace.tf/items/5021;6/Mann%20Co.%20Supply%20Crate%20Key

70 / 1.80 = 38.89, which rounds to 39 Keys

Sale 2) Bulk sale

https://backpack.tf/profiles/76561197994783413#!/compare/1556496000/1556668800

https://backpack.tf/profiles/76561197982127154#!/compare/1556582400/1556668800

Sale 3) Sold for a Circling TF Logo Wraith Wrap (29 Keys)

https://backpack.tf/profiles/76561197982127154#!/compare/1556668800/1556755200

https://backpack.tf/profiles/76561198007285775#!/compare/1556755200/1556841600

Sale 4) ?

https://backpack.tf/profiles/76561198007285775#!/compare/1556841600/1557014400

Sale 5) Quicksold for 20 Keys

https://backpack.tf/profiles/76561198002757046#!/compare/1556928000/1557014400

https://imgur.com/a/mGJaQ1Q - Picture of the sale for when Rubi inevitably sells more stuff.