United States
 
United States Navy senior officer’s cap
Boy, I’ve looked for years for one of these! I don’t know why they should be so hard to come by since they’re not particularly rare. At any rate, both this and the admiral’s cap that follows turned up at a surplus store in Miami. This particular model is a Bancroft Pak-Cap, which features a special spring-loaded hinge to permit the crown to be folded for easy packing. I’m sure the Bancroft people are very proud of this invention, but the truth is, Comptons in London was already doing this back in the 40s! By the way, only Commanders and Captains are entitled to wear the "scrambled eggs" on their visors, although the Army, Air Force, and Marine Corps already start at the rank of Major, whose Navy equivalent would be Lieutenant Commander.