50 Dollars F104 Starfighter

The F-104 Starfighter had one of the most controversial operational histories of any postwar jet — designed by Clarence "Kelly" Johnson at Lockheed as a pure air-superiority fighter, it was subsequently adapted by NATO air forces into a low-altitude strike role it was never built for. The German Luftwaffe lost over 100 aircraft and 70 pilots to accidents in the type, earning it the nickname "Witwenmacher" — widowmaker.

The Marshall Islands issued dozens of these $50 silver rounds through the 1990s under a licensing arrangement that functioned essentially as a bullion collectibles program. Legal tender in name only.