The coin you are inquiring about is a 1857 $1 Gold Dollar from the United States of America, part of the Gold Dollars series. This particular coin is notable for its composition, consisting of 90% gold and 10% copper, which gives it a distinctive value and appearance. Produced with a total mintage of 774,789 pieces, this coin is classified as a Mint Strike, indicating it was produced directly by a mint using standard striking techniques. The coin has a diameter of 14.3 millimeters. While specific details such as the weight and exact mint are marked as 'N/A', it is important to note that the absence of a mint mark suggests it was struck at the Philadelphia Mint, where most of the Gold Dollars were produced during this era. The 1857 Gold Dollar is not only a representation of American numismatic art but also holds historical significance, being part of a series that was designed to promote the use of gold currency during a time when gold was gaining prominence as a monetary standard. Coins from this series are often sought after by collectors for their beauty, rarity, and the rich history they represent within American coinage.