2000 Christopher Columbus - World's Smallest Gold Coin!!!This year 2000 Gold Republic of Liberia $25.00 weighs 0.73 grams (0.02347 Troy Ounce) and is made of .999 Fine Gold. The coin is Proof quality and is one of only 20,000 pieces made. Our low opening bid is below the Gold Content Value! The free listing tool. List your items fast and easy and manage your active items.