4003=GEOGCS["Unknown datum based upon the Australian National Spheroid (deprecated)",DATUM["Not_specified_based_on_Australian_National_Spheroid",SPHEROID["Australian National Spheroid",6378160,298.25,AUTHORITY["EPSG","7003"]],AUTHORITY["EPSG","6003"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4003"]]