I just noticed in the photo on the "Remove sweat from the liner" topic the name "Federation IV" is clearly visible on the inside.
Mine just says "Federation".
I bought it under the impression it was a IV, but does this mean it's a III??
I purchased the fed IV standard as well and my hat simply states Federation. My early guess is that the standard hats state Federation while the deluxe models state Federation IV.
I have one of the first standard Fed IV (April), and the sweatband says just "Federation", like the old Fed III. I think they added "IV" in the second wave.
The first batch of Fed 4's came through without the IV added - if you ordered a Fed 4 that is what was sent. The IV was added from the second batch.
It was a simple oversight at the factory partly due to the rush in getting them out prior to the movie. To send them back for re stamping would have been a 3 week delay.