The Liberty Double Eagle was struck in a composition of 90% gold and 10% copper, with a diameter of 34 mm and weight of 33.4 grams. All coins have a reeded edge. The denomination carries a value of twenty dollars, or twice the value of the previous highest denomination known as the eagle.
Each coin contains net gold content of 0.96750 troy ounces.
During the course of the series, coins were struck at the Philadelphia, New Orleans, San Francisco, Carson City, and Denver Mint facilities. The coins struck at Philadelphia do not contain a mint mark. The mint mark for the remaining facilities can be found on the reverse of the coin below tail feathers of the eagle.
