(Wells Fargo & Co.) Signal, A.T. (Mohave), "The Big Sandy M. and M. Co." corner card imprint on unused 1887, 2¢ brown entire with express frank at top, accompanied by letter datelined "Signal City A.T., Nov 14th, 78" which mentions…I send this letter by Express for there is no P office in this county., Very Fine. Estimate  $150 - 200. $0 (Image)