Mexico 1868, 12c black on green, Mazatlán. Cons 8-71, tied by Mazatlan cds (Schatzkes 746) on cover to San Francisco, handed over to Wells, Fargo & Co. for delivery with blue "Wells, Fargo & Co., San Francisco, Aug 10" oval receiving date stamp, Very Fine, a rare Pacific maritime usage via Wells, Fargo & Co. Scott No. 59  Estimate $400 - 600. $0 (Image)