Unusual Revived Recharge Fleet Commander (24 Keys) + 24 Keys - For - Unusual Laugh-O-Lantern Caribou Companion = 48 Keys

Proof: https://imgur.com/a/Nr4DyTS

History: https://backpack.tf/item/9340894899

Compares:

https://backpack.tf/profiles/76561198243733054#!/compare/1774656000/1776297600

https://backpack.tf/profiles/76561199550301253#!/compare/1770681600/1776297600