1) 44 keys

https://mannco.store/item/12136 - Sold for $79.98 on October 6

https://mannco.store/item/440-mann-co-supply-crate-key - Keys were at $1.81 on October 6

https://manic.tf/keyprice/?at=2022-10-06&site=mannco.store

79.98/ 1.81 = ~ 44.18 keys = ~44 keys

I was unable to find the item history despite searching via premium database, I assume this item went untraced to a private inventory.

2) Bulk

https://backpack.tf/item/12047577689

https://backpack.tf/profiles/76561198376885782#!/compare/1665705600/1665792000

https://backpack.tf/profiles/76561198983856237#!/compare/1665705600/1670457600

https://gladiator.tf/time-machine?item=White+Lightning+Hephaistos%27+Handcraft&at=2022-10-14T22%3A48%3A00.000Z B/O 35 keys

3) 32 keys

https://backpack.tf/item/11652642783

https://mannco.store/item/12136 - Sold for $60 on November 23

https://mannco.store/item/440-mann-co-supply-crate-key keys were at $1.85 on November 23

https://manic.tf/keyprice/?at=2022-11-23&site=mannco.store

60/1.85 = 32.43 ~ 32 keys

Going 32 - 44 keys or an average of 38 keys.

As mentioned in my previous suggestion, the one I currently own was a bulk deal back in May that came along with my steaming bonk boy, so that's excluded.

Feedback welcome. Thanks!