This is a 1974 26¢ airmail First Day Cover featuring the Mount Rushmore 'Shrine of Democracy' stamp, postmarked in Rapid City, South Dakota on January 2, 1974.
Mount Rushmore National Memorial, carved between 1927 and 1941 by sculptor Gutzon Borglum, depicts Presidents George Washington, Thomas Jefferson, Abraham Lincoln, and Theodore Roosevelt. The monument symbolizes the birth, growth, development, and preservation of the United States and remains one of the most iconic landmarks in American history.
The stamp design highlights the four presidential faces against the granite mountainside with the inscription 'Shrine of Democracy,' and the cover carries the official 'First Day of Issue' inscription. Rapid City is the closest major city to Mount Rushmore, making this the appropriate first-day location.
A clean, attractive philatelic item ideal for collectors of U.S. airmail stamps, presidential topicals, or South Dakota postal history.