The words STILLWATER PALLADIUM are engraved near the rim. The phrase LEWIS & CLARK CORPS OF DISCOVERY, as well as the year 2004, lie below Lewis’ outstretched arm.
The other side of the round features an American bison, much like the one on the Buffalo Nickel. At the time of the Corps of Discovery’s expedition, massive herds of buffalo roamed the American plains. The round bears the words UNITED STATES OF AMERICA and 1/4 TROY OUNCE .9995 FINE PALLADIUM are marked on this side.