Langton's Pioneer Express/Camptownville. Blue oval handstamp and "Paid" blue straight line handstamp on 1853-55 3¢ Nesbitt entire to Nevada City, exchanged with "Pacific Express Co./Marysville" undated blue double-lined oval handstamp, Extremely Fine and choice, a scarce conjunctive use, ex-Edwards. Estimate  $500 - 750. $0 (Image)