GEOGCS["Unknown datum based upon the Clarke 1880 (Arc) ellipsoid (deprecated)",
    DATUM["Not_specified_based_on_Clarke_1880_Arc_ellipsoid",
        SPHEROID["Clarke 1880 (Arc)",6378249.145,293.4663077,
            AUTHORITY["EPSG","7013"]],
        AUTHORITY["EPSG","6013"]],
    PRIMEM["Greenwich",0,
        AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.0174532925199433,
        AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","4013"]]