Sale 1)

https://imgur.com/a/EqwMFeh

~14 keys

Sale 2)

https://imgur.com/a/1sBcKpe

17 keys

Sale 3)

https://backpack.tf/profiles/76561198261884457#!/compare/1633305600/1633392000

https://backpack.tf/profiles/76561198107301392#!/compare/1633305600/1633392000

21 keys

Sales 4 & 5)

https://marketplace.tf/items/tf2/31130;5;u157

https://backpack.tf/item/10126379772 - $40.99 / $1.83 = 22 keys

https://backpack.tf/item/9478951006 - $40.99 / $1.83 = 22 keys

Sale 6)

https://backpack.tf/profiles/76561199101711836#!/compare/1640995200/1641081600

20 keys

Notes:

There's a 21 key seller on SCM https://steamcommunity.com/market/listings/440/Unusual%20King%20Cardbeard?filter=laugh

?

https://backpack.tf/profiles/76561199100906514#!/compare/1635724800/1635811200

https://backpack.tf/profiles/76561198129873605#!/compare/1635724800/1635897600

Untrace (dumped to a buy order most likely):

https://backpack.tf/profiles/76561198129873605#!/compare/1635897600/1636243200

Bulk (?):

https://backpack.tf/profiles/76561198107301392#!/compare/1635292800/1636588800

https://backpack.tf/profiles/76561199100906514#!/compare/1635206400/1635292800

That leaves us with the following sales:

14

17

20

21

22

22

Excluding 14 as it was to a buy order and is now below buyers. Excluding 22 as it is high; 3 month unsold at 22 and a 21 seller on scm

Taking 17-21

Gladiator stats https://gladiator.tf/sales?item=Laugh-O-Lantern%20King%20Cardbeard