Wells Fargo & Co. Express/Auburn. Blue oval handstamp with matching "Paid" in octagon handstamp alongside, on 1853 cover to San Francisco with small black illustrated steamboat frank at top left, Extremely Fine, quite possibly the finest known example of this extremely rare Wells, Fargo & Co. frank; with 2004 P.F. certificate. Estimate  $3,000 - 4,000. $0 (Image)