Wells, Fargo & Co./Whitcomb Bay (Washington Terr.), blue Wells, Fargo & Co. oval handstamp tying 1857 3¢ on cover with black company frank to Oakland, carried by Wells, Fargo & Co. to San Francisco & transferred to J. Bamber & Co./Contra Costa Express with their oval handstamp & scarce "Collect 12½Cts" in diamond, part of flap missing with small cover tear at top extending into frank, F.-V.F., a very rare office from Washington Territory & a nice conjunctive usage. Estimate  $500 - 750. $0 (Image)