Billy here lost his Fable 2 Collector's Edition code card. You see, his copy of the game seems to have misplaced it. Don't worry Billy, Microsoft has come to the rescue.
Simply hit up this support site and fill in the required information, and you should have your CE code available shortly! Master Chief Armor and a Special Dungeon will be all yours within 10 working days. And for those of you with a slightly evil demeanor, you can try to get the codes if you wish, but there may be consequences!
Source: Xbox.com