1940 Golden Gate International Exposition. Dow Chemical Company Medal. Dowmetal. MS-63 (NGC).51 mm. <strong>Obv:</strong> Central inscription DOWMETAL / MAGNESIUM ALLOYS / FROM NATURES TREASURE CHEST / 1940 with sun rising above waves in background, peripheral inscriptions GOLDEN GATE INTERNATIONAL EXPOSITION / THE DOW CHEMICAL COMPANY. <strong>Rev:</strong> Steel worker with Dow logo below, inscription WORLDS LIGHTEST STRUCTURAL METAL above. Please note, NGC has mounted this medal with the reverse up in the holder.