<P> Regular issue double eagles come in two major types and six minor varieties as follows: </P> <Ul> <Li> Liberty head (coronet) 1849--1907 <Ul> <Li> Liberty head, no motto, value "twenty D ." 1849--1866 </Li> <Li> Liberty head, with motto, value "twenty D ." 1866--1876 </Li> <Li> Liberty head, with motto, value "twenty dollars" 1877--1907 </Li> </Ul> </Li> <Li> Saint Gaudens' 1907--1933 <Ul> <Li> Saint Gaudens', high relief, Roman numerals, no motto 1907 </Li> <Li> Saint Gaudens', low relief, Arabic numerals, no motto 1907--1908 </Li> <Li> Saint Gaudens', low relief, Arabic numerals, with motto 1908--1933 </Li> </Ul> </Li> </Ul> <Li> Liberty head (coronet) 1849--1907 <Ul> <Li> Liberty head, no motto, value "twenty D ." 1849--1866 </Li> <Li> Liberty head, with motto, value "twenty D ." 1866--1876 </Li> <Li> Liberty head, with motto, value "twenty dollars" 1877--1907 </Li> </Ul> </Li> <Ul> <Li> Liberty head, no motto, value "twenty D ." 1849--1866 </Li> <Li> Liberty head, with motto, value "twenty D ." 1866--1876 </Li> <Li> Liberty head, with motto, value "twenty dollars" 1877--1907 </Li> </Ul>

When was the last time gold was worth $20 an ounce