This First Day Cover features the 13¢ Colorado stamp issued May 21, 1977, and postmarked in Denver, Colorado on the official first day of issue. The stamp depicts the Rocky Mountain columbine against a dramatic mountain backdrop, labeled “The Centennial State.”
Colorado entered the Union as the 38th state on August 1, 1876, exactly one hundred years after the Declaration of Independence, earning its nickname. The 1977 stamp celebrates that milestone and highlights the state’s official flower, the columbine, which thrives in the high Rockies.
The cover carries a crisp black circular datestamp from Denver’s 80202 ZIP Code zone and the straight-line “FIRST DAY OF ISSUE” handstamp beneath the stamp—an attractive, uncluttered example of 1970s U.S. postal history.
Addressed to a collector in Philadelphia, the cover offers a tangible link between the Centennial State and East-Coast philatelists of the era.
A clean, well-centered addition for any U.S. statehood or wildflower topical collection, ready for display or album mounting.
