Wells Fargo & Co. Express, Benson, A.T., Aug 1, 1892 (Cochise), purple oval date stamp (Meyer 4, rarity 8) with additional straight line date stamp on part pin-up (paste-up) 1887, 2¢ green entire to San Francisco, Cal., receiving date stamp, Very Fine, this is one of only three recorded examples of this Benson date stamp. Estimate  $500 - 750. $0 (Image)