» Fri May 13, 2011 2:16 pm
Seen your picture, ya, it's missing. Should be a white sticker, non-permanent adhesive (I know it's removable 'cause it was sooo sloppily placed in my case, I had to 'fix it') measuring 3.25"x1", with the 5x5 keycode printed on it.
Chances are during production your case missed the sticker and QC didn't catch it.
If possible, I'd return it and get a replacement, calling it "defective".
Edit: Wasn't considering prebuy bundle (probably a matter of time 'til all 4 are available legit anyways). If not immediately important, return to Best Buy (exchange only what's necessary). If immediately important, contact Bethesda Support.