GEOGCS["Tristan 1968",
    DATUM["Tristan_1968",
        SPHEROID["International 1924",6378388,297],
        TOWGS84[-632,438,-609,0,0,0,0]],
    PRIMEM["Greenwich",0,
        AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.0174532925199433,
        AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","4734"]]