The series is generally divided into three subtypes. These include the No Motto (?IN GOD WE TRUST?) on Reverse, which were struck from 1849 through 1866; Motto Above Eagle pieces, produced from 1866 through 1876; and Value TWENTY DOLLARS, which rounded out the series from 1877 until the last were issued in 1907. Only a single pattern was struck in 1849 and is in the Smithsonian Collection. Thus, collectors must begin their $20 Liberty gold collections with the 1850 issues, which were struck at the Philadelphia and New Orleans Mints. The majority of $20 Liberty gold issues are relatively common, though there are several scarce issues, including the 1854-O, 1856-O, 1861-S Paquet Reverse, 1870-CC, 1871-CC, and proof-only 1887. As a rule, all Carson City (CC) issues are scarce, as are nice Gem specimens of any issue.
Like many pre-1933 gold issues, circulated examples of common $20 Liberty double eagles are widely traded at price levels near gold spot. Despite their prevalence in bullion-related trades, $20 Liberty gold coins are actively pursued by diehard numismatists and pose a great collecting challenge to even the most financially well-heeled of collectors.