GEOGCS["Unspecified datum based upon the International 1924 Authalic Sphere",
    DATUM["Not_specified_based_on_International_1924_Authalic_Sphere",
        SPHEROID["International 1924 Authalic Sphere",6371228,0,
            AUTHORITY["EPSG","7057"]],
        AUTHORITY["EPSG","6053"]],
    PRIMEM["Greenwich",0,
        AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.0174532925199433,
        AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","4053"]]