1976 13¢ Interphil ‘76
Issue Date: January 17, 1976
City: Philadelphia, Pennsylvania
Printed By: Bureau of Engraving and Printing
Printing Method: Lithographed, engraved
Color: Dark blue and red (engraved); ultramarine and red (lithographed)
U.S. #1632 commemorates the seventh U.S. International Philatelic Exhibition. Held in Philadelphia, Pennsylvania, it was the largest international philatelic event ever to take place in the United States.