Hunter & Co.'s Express. postrider in oval handstamp on 1851 cover to Sacramento City, manuscript "Spencersburg, Mo., July 8th" origin postmark and, red "10" rate handstamp, manuscript "Sp.B. Mill 1.35" for Spanish Bar Mill routing and added express fee, light cover wrinkling, Very Fine. Estimate  $2,000 - 3,000. $0 (Image)