Time to redeem Mail's work here.

Harvest Moon Brain Bucket

https://backpack.tf/item/1225155541 - all sales involved came from this hat.

Sale 1

Sold for a Cloudy Moon Defiant Spartan (65) + Miami Nights Coldsnap Cap (30) + 10 keys = 105 keys

https://backpack.tf/profiles/76561198070705963#!/compare/1568332800/1568419200

https://backpack.tf/profiles/76561198056654205#!/compare/1568160000/1568419200

The buyout was 100 keys, capping: https://bot.tf/stats/listings/4KRQ7WLX

Sale 2

Bulk for keys

https://backpack.tf/profiles/76561198205939253#!/compare/1567814400/1567900800

https://backpack.tf/profiles/76561198070705963#!/compare/1567814400/1567900800

Sale 3

Sold with Secret Tough Guy's Toque for Secret Powdered Practitioner (used there)

https://backpack.tf/profiles/76561198056465795#!/compare/1567123200/1567209600

https://backpack.tf/profiles/76561198205939253#!/compare/1567123200/1567209600

Sale 4

Sold for an SBTWC Counterfeit Billycock (55.5) + 47 keys = 102.5 keys --> 103 keys

https://backpack.tf/profiles/76561198362008411#!/compare/1566259200/1566432000

https://backpack.tf/profiles/76561198056465795#!/compare/1566345600/1566432000

Buyout was 100 keys, capping: https://bot.tf/stats/listings/YDLDEWDV

Minis:

Cloudy Moon Defiant Spartan at 60-70 (~65): https://backpack.tf/suggestion/5dc1d406d381726a863b9509

No sellers, buyers up to 91 keys.

Refreshing.