143L1, Wells, Fargo and Co. Pony Express, 1861 $2 Red, uncancelled single on 10c Green Nesbitt (U16) front only to Washington, DC, red Wells Fargo printed frank, green "St. Joseph Mo. Jul 8" datestamp, heavy vertical file fold away from stamp and stamp with light crease, fine and attractive economical alternative to a full Pony Express cover,  2022 Philatelic Foundation certificate (Scott $1,100 for used single, $12,500 on U16 entire)