Club Obi Wan

What exactly is/was the difference??
Brim size?
Crown height??
Fur Quality???

What??

The Fed III is taller than the IV, and with a larger brim. Also the colour is different: the Fed IV is more chocolate.
See this pic for reference, both hats are 57. IV on left, III on right.

I think both are the same fur quality, but the Fed IV is a little more stiff.

The brim of the Fed III is 70x73, Fed IV is 63x70.

And, if I remember, the Fed III don't have the dimensional cut of the brim.

One question: why the new Fed III was taller than IV?
What of the two hat have the more SA crown?

No, Fed III HAS dimensional cut (see my post here). The Fed IV is a little smaller to match the KOTCS hats. Fed III crown is more raideresque to me, but you can have a different opinion here.

BazzanoJones wrote:And, if I remember, the Fed III don't have the dimensional cut of the brim.

One question: why the new Fed III was taller than IV?
What of the two hat have the more SA crown?

The Fed III crown height was not designed just for Indy fans, but also for vintage style hat lovers. They ended up compromising with a crown height that varied by hat size, starting at 5 1/2 inches for small sizes and going up from there. That was influenced the brim width.

The Fed IV is targeted much more for the Indy fan, so it's generally a more accurate hat. As for which crown is more SA; The IV has less taper and the right height for Raiders and Skull. Some prefer the III, but in the strictest sense, the IV is more SA.

Thanks guys! ;-)