½ Dollar "Walking Liberty Half Dollar" , United States

Obverse: A hiker discovering the majesty of the wilderness and a small child discovering a frog hiding in ferns, celebrating the diversity and breadth of the National Park Service Designer: Barbara Fox, Reverse: The National Park Service logo, which has been in use since 1951. Within the logo, the Sequoia tree represents vegetation, the bison represents wildlife, the mountains and water represent scenic and recreational aspects, and the arrowhead represents historical and archaeological aspects..

Obverse: The portrait in left profile of George Washington, the first President of the United Stats 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: A pair of grazing American Buffalo in the foreground with a sunset view of the rugged buttes and canyons of the state's "Badlands" in the background.

Obverse: Liberty with capped bust left, date below., Reverse: Eagle center with motto on ribbon above, and "UNITED STATES OF AMERICA" and "50 C" at rim.