Rockfellow & Co.'s Express, Paid 75¢, printed frank on 1861, 3¢ pink entire from the Boise Mines to Ione City, Cal., with manuscript "Mail at Auburn" endorsement alongside, carried to Walla Walla with blue "Wells, Fargo & Co., Walla, Walla, Apr 9" oval date stamp; light corner wear and slight reduction at right, F.-V.F., a rare conjunctive usage. Estimate  $500 - 750. $0 (Image)