https://backpack.tf/item/13628907966

Dumped to Quicksell.Store, 1 key and 2.77 ref match:

https://backpack.tf/profiles/76561198204028017#!/compare/1706832000/1709164800

https://backpack.tf/profiles/76561199110809353#!/compare/1706745600/1706832000

4 keys:

https://backpack.tf/profiles/76561199110809353#!/compare/1706918400/1707004800

https://backpack.tf/profiles/76561198060009141#!/compare/1706918400/1707004800

https://backpack.tf/item/6156995677 withdrawn from Scrap.tf user storage without being sold

https://backpack.tf/item/12444209833

Unclear what happened but 3 taunts were withdrawn from Scrap.tf storage:

https://backpack.tf/profiles/76561198160747515#!/compare/1700611200/1703894400

https://backpack.tf/item/5185653101

Looks like 2 keys and 24.55 ref:

https://backpack.tf/profiles/76561198798111160#!/compare/1702944000/1703030400

https://backpack.tf/profiles/76561198088994673#!/compare/1702425600/1703116800

keys sales are all over the place, taking the median of the lowest and highest sale https://gladiator.tf/sales?item=Mann%20Co.%20Supply%20Crate%20Key&at=2023-12-19T19:27:44.264Z (59.22+62)/2=60,61

so 24.55/60.61=0,405, making this sale 2.4 keys

3 keys:

https://backpack.tf/profiles/76561198088994673#!/compare/1704758400/1704844800

https://backpack.tf/profiles/76561198166908820#!/compare/1704758400/1704844800

So we have sales at 2.4, 3 and 4.

https://steamcommunity.com/market/listings/440/Unusual%20Taunt%3A%20Second%20Rate%20Sorcery

generic buyers on SCM are at $5.35 (~2.55 keys taking keys at $2.1)

2.4 looks a little low so going with 3-4 keys