cover franked with 1873 3c Green Banknote (158), small faults, tied by black cork to 3c Green stamped envelope to Paris (overpaying by 1c the UPU rate), postmarked Denver, Colorado March 15, 1878, blue "Forwarded by Munroe & Co., 7 Rue Scribe Paris" oval handstamp, forwarded to Seville with France 30c Brown paying redirection fee, light wear, very fine and attractive, ex-Pacetti