143L3, Wells, Fargo and Co. Pony Express, 1861 $1 Red, stamp tied by blue "Pony Express San Francisco Oct 12" Running Pony on 10c Pumpkin (U40) entire with red printed Wells Fargo frank to New York, manuscript "Pony Express Oct 12" partially under stamp, "Atchison Kan Oct 25" double circle datestamp, extremely fine and attractive, carried during the last month of the Pony Express's existence, FKW Census #E177, 2022 Philatelic Foundation certificate The Fourth Rate Period (July 1 to October 26, 1861) saw the United States government further reduce the Pony Express rate to $1 per half-ounce. To meet the new rates, stamps were printed in red ($1.00), green ($2.00), and black ($4.00).