Central Overland & Pike's Peak Express, 1861 (April 21), cover to Denver City, franked with 3 c. dull red, tied by circular grid cancel, Chicago c.d.s. (22 Apr) alongside, endorsed “Central Overland and P. Peak Express Company” in manuscript and struck with corresponding oval datestamp of St. Joseph, Missouri, with enclosure, slightly reduced at left, clear of Express notation, else fine.