This official First Day Cover features the 13¢ Interphil '76 stamp issued January 17, 1976, in Philadelphia, Pennsylvania. The cachet was produced by the Philadelphia '76 Commission and depicts Independence Hall at dusk with a colonial figure and the Liberty Bell logo.
INTERPHIL '76 was the seventh international philatelic exhibition hosted in the United States and formed a key part of the nationwide Bicentennial celebrations. Held May 29–June 6, 1976, the event drew collectors from around the world to Philadelphia, the birthplace of American independence.
The stamp design incorporates the exhibition logo with red, white, and blue perforations symbolizing both the hobby and the national colors. The January 17 first-day date precedes the actual exhibition by several months, making this cover an early announcement of the major 1976 philatelic event.
A fine addition for collectors of U.S. Bicentennial issues, international exhibitions, or official cachets, this cover remains in excellent condition with a crisp Philadelphia postmark and vibrant cachet artwork.