"Pony Express, The Central Overland & Pikes Peak Express Company, St. Joseph. Mo. Jan 20" (1861), large green oval-in-circle company handstamp on westbound 10c Nesbitt entire (U17) to Crosby & Dibblee in San Francisco, California
just nine recorded covers with the St. Joseph oval-in-circle marking struck in green
small edge faults
FKW Census #W33
2022 Philatelic Foundation certificate
Provenance:
Barkhausen
Rarities of the World (R.A. Siegel Sale 229, 1969)