GEOGCS["Unknown datum based upon the Helmert 1906 ellipsoid (deprecated)",
    DATUM["Not_specified_based_on_Helmert_1906_ellipsoid",
        SPHEROID["Helmert 1906",6378200,298.3,
            AUTHORITY["EPSG","7020"]],
        AUTHORITY["EPSG","6020"]],
    PRIMEM["Greenwich",0,
        AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.0174532925199433,
        AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","4020"]]