The owner of that hat you linked says he reshaped that Stetson Tom Mix. The shape he ended up with is (to my eyes) identical to the Stetson Royal Flush hat (btw, I've been told that Stetson names their hatbands, not their hats). I've got a black Royal Flush and a silverbelly Royal Flush (same color as that reshaped Tom Mix. My black one got rained on and I was able to push in the crown just like your pic shows. The Royal Flush is 5X.