The Barber design with flowing hair. This was struck on wider diameter planchets than the normal half eagle.
About one and a half dozen are known, several of which have been gilted. At least 6 are impounded in museum collections.
An example ex-Farouk, Hughes 7/80 is listed as brass and is listed as J1574A/P1767. It is not known if this coin has been analyzed.
Photo courtesy of Heritage.