4230=GEOGCS["ED50",DATUM["European_Datum_1950",SPHEROID["International 1924",6378388,297],EXTENSION["PROJ4_GRIDS","SPED2ETV2.gsb"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4230"]]