Four of America's former U.S. Presidents are prominently featured on the obverse of the 1991-S Mount Rushmore Silver Dollar.
Obverse: From left to right: George Washington, Thomas Jefferson, Theodore Roosevelt and Abraham Lincoln's portraits are intricately carved on Mount Rushmore, which also happens to be the world's largest stone sculpture. Below Mount Rushmore, are the inscriptions "Golden Anniversary Mount Rushmore National Memorial, and In God We Trust."
Reverse: The reverse has the United States of America Seal and above it, are the inscriptions "United States of America." Below the seal are the inscriptions, "Shrine Democracy E Pluribus Unum One Dollar."