Wells, Fargo & Co, Pony Express, $1.00 red, good to large margins, on 10c green star die stationery entire with red Wells, Fargo & Co printed frank, tied by neatly-struck blue oval "Pony Express / Sacramento / Sep 22", both partially overtop manuscript "Pony Express", postmarked with "Atchison Kan / Oct / 5" double-circle c.d.s., to New York City, endorsed at lower left "Please keep at the / N.Y. Office till called for.", oval "New York Post Office / ADVERTISED" in black and "New York / Oct 15" c.d.s. backstamp, not collected as indicated and struck with oval "P.O. Department Dead Letter Office / Mar 11 / 1862" adhesive with some wrinkles, particularly near "Co.",  repaired tears, yet a rare late usage of tremendous visual appeal; ex Knapp, Haas. FKW Census E165.