GEOGCRS["Unknown datum based upon the Plessis 1817 ellipsoid",DATUM["Not specified (based on Plessis 1817 ellipsoid)",ELLIPSOID["Plessis 1817",6376523,308.64,LENGTHUNIT["metre",1]]],PRIMEM["Greenwich",0,ANGLEUNIT["degree",0.0174532925199433]],CS[ellipsoidal,2],AXIS["geodetic latitude (Lat)",north,ORDER[1],ANGLEUNIT["degree",0.0174532925199433]],AXIS["geodetic longitude (Lon)",east,ORDER[2],ANGLEUNIT["degree",0.0174532925199433]],USAGE[SCOPE["Not recommended."],AREA["Not specified."],BBOX[-90,-180,90,180]],ID["EPSG",4027]]