Mercury Dime: The Mercury Dime was minted from 1916 to 1945. The designer was Adolph Weiman. Minted from 1916 - 1945. Mercury is the messenger of the Gods in Roman mythology. The portrait on its obverse is actually that of Liberty wearing a winged cap symbolizing freedom of thought. It also was a symbol of American's new spirit. Swivel-back closures. Made in the USA.