GEOGCS["Unknown datum based upon the Clarke 1880 (IGN) ellipsoid (deprecated)",
    DATUM["Not_specified_based_on_Clarke_1880_IGN_ellipsoid",
        SPHEROID["Clarke 1880 (IGN)",6378249.2,293.466021293627,
            AUTHORITY["EPSG","7011"]],
        AUTHORITY["EPSG","6011"]],
    PRIMEM["Greenwich",0,
        AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.0174532925199433,
        AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","4011"]]