1856 Double Eagle - 1856 $20 NGC AU53. This Choice AU, Type 1 1856 Double Eagle has bits of original mint luster within protected areas of both sides of the coin. The light and dark yellow gold colors affirm the coins originality. The surfaces are clean for the grade with no notable abrasion marks or other distractions. The strike is strong with full details on the centers of the stars and the design elements of the reverse, especially the eagle.
 
James B. Longacre designed the Liberty Head double eagle. It shows a profile of Liberty facing left, wearing coronet inscribed LIBERTY. Her hair is tightly tied in the back with two loose curls hanging down her neck to the end of the truncation. She is surrounded by thirteen six-pointed stars with the date below. Dentils are near the edge on both sides of the coin. The reverse shows a heraldic eagle with elaborate ribbons on both sides of the shield extending from the top corner down to the eagles tail feathers. The ribbons are inscribed, on the left E PLURIBUS and UNUM on the right. The ribbons were added to the design to symbolize the denomination since this was the first twenty dollar coin. There is an oval of thirteen stars above the eagles head and an arc of rays from wing tip to wing tip behind the upper half of the oval. UNITED STATES OF AMERICA is in an arc above the eagle, and the denomination TWENTY D. is below.
 
The coin was produced because of the huge amount of gold that came into the Mint from California. With the discovery of gold at Sutters Mill in January 1848, the California gold rush began. It led to an influx of miners and others into the area. The vast quantity of gold produced led to a need for a standard form of exchange. The double eagle was the governments response. They also felt that the new denomination would be useful for large commercial transactions and that it would facilitate foreign trade.

Longacres double eagle design was a new concept that endured well past the turn of the century. When Longacre first came to work at the Mint, he was opposed by Franklin Peale, the Chief Coiner. Peale was probably responsible for some blundered dies that Longacre was criticized for making. Peal was involved in a private, illegal medal manufacturing business using Mint facilities. He was concerned that this new political appointee would interfere with his business, and he resisted Longacres appointment as Chief Engraver. In the end Peale was found out and fired in 1854. Longacre flourished in his position and was responsible for creating many new designs including the Indian Head cent, the two-cent piece, the Shield nickel, the Liberty Head gold dollar, the Indian Princess gold dollar, the three-dollar gold piece, and the Liberty Head double eagle. 

The 1856 double eagle is more difficult to obtain than many of the other 1850s Philadelphia double eagles. Most of the known coins are in low grades, and the date is very rare in Mint State.