Huge thanks to John for providing sales and evidence for this suggestion!

(previous sales are now outdated)

https://backpack.tf/item/76388704

https://backpack.tf/profiles/76561198057452720#!/compare/1634601600/1635897600

https://backpack.tf/profiles/76561198350308765#!/compare/1635811200/1635897600

1590 keys + Clean HOUWAR

Suggesting HOUWAR at 305-335k: https://backpack.tf/suggestion/61786e60baed2f631d0586cf

but it's possible that may be a little high here, so rounding this sale to a clean 1900 keys.

https://backpack.tf/item/76370975

Full 2500 key pure sale, where two accounts of the seller were used for inventory space (John). The seller received the keys in two installments - 1500 keys (on their alt) and 1000 keys (on their main). John said he moved them afterwards, so that's why 2000 is seen in compare's for the main, and 500 for the alt, but the total is still the same.

John: https://backpack.tf/suggestion/6144fe6c69bdac3c6565d918#comment-6182819613c0ba115a67dc65

used 2 accounts of mine because of inventory spaces

got 1500keys on my second account

and then got 1000keys on my main account

after that i moved 1000keys on my main account from second account

so 2000keys on my main account and 500keys on my second account

https://backpack.tf/profiles/76561198350308765#!/compare/1634515200/1634601600

2000 keys received on seller's main

https://backpack.tf/profiles/76561198064315470#!/compare/1588550400/1634601600

500 keys received on their alt

https://backpack.tf/profiles/76561198164261887#!/compare/1634515200/1634601600

Buyer received Luger afterwards

Supplementary screenshots:

https://steamuserimages-a.akamaihd.net/ugc/1815507787295469715/D7632A84E241DA3E97E6178BC75FE694FAB4CB2E/

https://steamuserimages-a.akamaihd.net/ugc/1815507787295469892/E7FD0F544396867A64141DDE0EF927189F11D54B/

https://steamuserimages-a.akamaihd.net/ugc/1815507787295470009/2BDA2574308BCB065B3CCE8AC15394434E9AF8DB/