1892 Worlds Columbia Exposition- Obverse. Right Facing Photo Of Columbus, flanked by the words United States Of America, Colombian Half Dollar. Reverse port View Of The Santa Marie above 2 hemispheres, flanked by the date 1492. 90% Silver, 10% Copper 0.36169 Troy Ounce. United States Of America 1/2 Dollar. Condition Very Good – Photos are of same coin.