This 1977 13¢ Colorado First Day Cover features the official U.S. postage stamp honoring the Centennial State, postmarked in Denver, Colorado on May 21, 1977. The stamp depicts the Rocky Mountains and the Rocky Mountain columbine, Colorado’s state flower, with the inscription “THE CENTENNIAL STATE.”
Colorado entered the Union as the 38th state on August 1, 1876—exactly 100 years after the Declaration of Independence. The stamp’s issuance the following year celebrated that milestone and the state’s dramatic natural beauty, continuing the U.S. Postal Service’s tradition of highlighting each state’s unique character.
The cover bears the printed “FIRST DAY OF ISSUE” cachet directly beneath the stamp and a crisp circular Denver postmark dated May 21, 1977. The address panel shows it was mailed to a collector in Philadelphia, adding a nice cross-country postal-history touch.
A clean, well-centered example ideal for statehood, flower, or Colorado topical collections.
