UNITED STATES. Louisiana Purchase Exposition. St. Louis, MO. 1904. Gold-plated bronze so-called dollar. 16.34 gm. 34 mm. Official medal. Struck in mint exhibit on grounds. Conjoined busts of Napoleon and Jefferson left / Relief map of the U.S. with Louisiana purchase shown, star on map at St. Louis. HK 300. Uncirculated; slight roughness in flan at Jefferson's cheek; small area of discoloration on reverse at 5'. Scarce.