This 1977 First Day Cover features the 13¢ Colorado stamp issued May 21 in Denver, Colorado. The stamp depicts the state's iconic Rocky Mountains and the blue-and-white columbine, Colorado's official state flower, with the inscription "THE CENTENNIAL STATE."
Colorado entered the Union on August 1, 1876, exactly one hundred years after the Declaration of Independence, earning its nickname. The 1977 stamp celebrated that milestone and highlighted the state's natural beauty during America's growing environmental awareness of the 1970s.
The cover bears a crisp black circular postmark from Denver with the ZIP 80202 and the clear "FIRST DAY OF ISSUE" handstamp beneath the stamp, typical of U.S. Postal Service philatelic cancels of the era.
Addressed to a collector in Philadelphia, Pennsylvania, the cover offers a nice cross-country postal-history connection between the issuing city and a major East-Coast philatelic center.
A clean, well-centered example ideal for statehood, flower, or mountain topical collections.
