The $10 Liberty Gold coin, known as the Liberty Head design, was minted by the United States from 1838 to 1907. The 1866 issue, particularly from the San Francisco mint, is notable as it was the first year to include the "In God We Trust" motto on the reverse, following its legislative adoption. This coin contains 0.4838 troy ounces of gold and is widely collected for both its historical significance and gold content. The 1866 version is particularly sought after by collectors, enhancing its desirability and value within the numismatic market.