The Ooze Nuke.

Item 1:

https://backpack.tf/item/6288543807

Sale 1: Untrace.

https://backpack.tf/profiles/76561198049884052#!/compare/1703203200/1703376000

https://backpack.tf/profiles/76561198218497692#!/compare/1703030400/1703289600

Buyer and seller confirm it was 339 keys:

https://imgur.com/a/Iq2OAad

Waiting on further confirmation, but this should suffice for now.

https://imgur.com/a/CsUzX4s (annoying screenshot but it shows all the keys)

Sale 2: Bulk for Roboactive Villain’s Veil.

https://backpack.tf/profiles/76561198218497692#!/compare/1703289600/1703376000

https://backpack.tf/profiles/76561198310972287#!/compare/1703203200/1703376000

Sale 3: Frostbite Condor Cap + Ooze Nuke + Spectral/VFB Anger for BF HKC.

https://backpack.tf/profiles/76561198310972287#!/compare/1704067200/1704153600

https://backpack.tf/profiles/76561198078028586#!/compare/1704067200/1704153600

Condor Cap in-date at 190.

https://backpack.tf/suggestion/65170e031b5dfa475008da88

Active suggestion on the Hong Kong Cone at 510.

https://backpack.tf/suggestion/6561a536855abef4e4004355

No mini available for the Anger, as far as I can tell. Using 3 key buy order:

https://imgur.com/a/NKHlPYE

510 - 190 - 3 = 317 keys.

Two usable sales at 339 and 317 keys.

Rounding and taking 315-340.