History: https://backpack.tf/item/3322308326

https://backpack.tf/profiles/76561198110834357#!/compare/1632960000/1633219200

https://backpack.tf/profiles/76561198453530349#!/compare/1633132800/1633219200

Sold for 28 keys.

https://backpack.tf/profiles/76561198093828661#!/compare/1628640000/1628726400

Dumped to a buy order for 22 Keys + 44.88 Refined

https://gladiator.tf/listings/6114398d79f1249a8b2eed3d

The buy order was for that, and the 44.88 Refined show, so it's likely the sale was for this.

https://backpack.tf/profiles/76561199039349282#!/compare/1628553600/1628640000

Bulk (with the Muffs for the Exe)

https://backpack.tf/profiles/76561199039349282#!/compare/1628553600/1628640000

Kill-a-Watt Coldsnap + Festive Scattergun (~2 Keys)

https://backpack.tf/profiles/76561198273988414#!/compare/1627948800/1628640000

Gambled.

MP: https://marketplace.tf/items/tf2/30047;5;u17

Aug 11: $57 / $1.81 = 31.49 keys

rounding off to 31 keys

https://gladiator.tf/listings/60d7eb99fbfc88d9ec936aa7

The Marketplace sale is capped by the buyout of 30 Keys

https://backpack.tf/profiles/76561198406114836#!/compare/1623542400/1623628800

https://backpack.tf/profiles/76561198209640976#!/compare/1623542400/1623628800

Bulk for chromatica hawk warrior. Excluding.

https://backpack.tf/profiles/76561198800728280#!/compare/1623283200/1623456000

Bulk for chiroptera kabuto. Excluding.

Sale 3: 23 keys + 6 ref

https://backpack.tf/profiles/76561198800728280#!/compare/1618185600/1618272000

https://backpack.tf/profiles/76561198311498888#!/compare/1618185600/1618272000

The bundle of 29 (23 keys + 6 ref) has histories that match up

sales:

28

30

23

taking 23-30 keys