The half eagle is a United States coin that was produced for circulation from 1795 to 1929 and in commemorative and bullion coins since 1983. Composed almost entirely of gold, its face value of five dollars is half that of the eagle coin. Production of the half eagle was authorized by the Coinage Act of 1792, and it was the first gold coin minted by the United States.

In 1839 the coin was redesigned again. The new obverse was designed by Christian Gobrecht and is known as the "Liberty Head or "Coronet head". The reverse design remained largely the same, although the value was changed from "5 D." to "FIVE D.".

For those struck at the Philadelphia Mint, there was no longer any silver in the coin - its composition was now .900 gold and .100 copper. However, gold ore used at the southern branch mints of Charlotte and Dahlonega had a high natural silver content, and many of these coins contained up to five percent silver, giving them a distinct so-called "green gold" color.

Its weight was virtually the same, 8.359 grams, but the diameter was reduced one final time, to 21.6 mm, in 1840, for a gold content of 0.242 Troy Oz. This design was used for nearly 70 years, from 1839 to 1908, with a modest change in 1866, when "IN GOD WE TRUST" was placed on the reverse above the eagle.

The Liberty Head half eagle is the only coin of a single design to be minted at seven U.S. Mints: Philadelphia, Dahlonega, Charlotte, New Orleans, San Francisco, Carson City, and Denver.

Scarcer dates and coins of higher grades can be worth much more, and all Charlotte, Carson City and Dahlonega pieces are scarce and valuable.