Wells Fargo & Co., Mexican Route. Blue oval handstamp with matching "Paid" in oval handstamp on cover to New York City, endorsed "pr WF&Co. Express, to San Francisco, Cal.", "2/-" bits rate, reverse with 1870, 2¢ green entire paste-up with black company frank, F.-V.F. Estimate  $100 - 150. $0 (Image)