20 Dollars Gerald R. Ford

Liberia's commemorative dollar series of the late 1990s and early 2000s was a frank revenue operation — the country was deep in the economic collapse that accompanied the tail end of Charles Taylor's rise to power, and licensing foreign leaders' likenesses for export-market collector coins was a reliable source of hard currency. Ford was an obvious candidate: unelected to either the presidency or vice presidency, his pardon of Nixon made him one of the most politically consequential figures of the 1970s, and his administration remains under-commemorated by the U.S. Mint itself.