Langton's Pioneeer Express, Alleghameytown, Cal, mostly clear brownish oval express company marking, used with 'Langton's Pioneer Express. Paid.' printed frank (Haller FL3, type 4), on 10c Green on buff Nesbitt entire (U16) cancelled by large blue grid of squares, matching mostly clear 'Marysville Cal. Paid By Stamps' datestamp, to South Boston Mass., fresh and fine, very scarce office marking for this active company, 1855-1865