½ Dollar "Seated Liberty Half Dollar" (with motto) , United States

Obverse: Christopher Columbus at landfall. Shown in the background is the Santa Maria and a smaller ship with the crew disembarking., Reverse: The thee ships of Columbus’ voyage under sail, known as the Nina, Pinta, and Santa Maria.

Obverse: The portrait in left profile of George Washington, the first President of the United States from 1789 to 1797, is accompanied with the motto "IN GOD WE TRUST" and the lettering "LIBERTY" and it is surrounded with the face value and the inscription "UNITED STATES OF AMERICA", Reverse: Maple trees with sap buckets in front of Camel's Hump Mountain is accompanied with the state's name ("VERMONT"), the date of its admission into Union ("1791"), its motto ("FREEDOM AND UNITY") and the motto "E PLURIBUS UNUM"

Obverse: The Statue of Liberty in profile., Reverse: An artist’s conception of the poliovirus at three different levels of magnification along with the silhouette of a period microscope, representing the extensive research conducted to develop a cure for polio.