EPSG:9783 - RGF93 v2b (lon-lat)

{
  "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
  "type": "GeographicCRS",
  "name": "RGF93 v2b (lon-lat)",
  "datum": {
    "type": "GeodeticReferenceFrame",
    "name": "Reseau Geodesique Francais 1993 v2b",
    "ellipsoid": {
      "name": "GRS 1980",
      "semi_major_axis": 6378137,
      "inverse_flattening": 298.257222101
    }
  },
  "coordinate_system": {
    "subtype": "ellipsoidal",
    "axis": [
      {
        "name": "Geodetic longitude",
        "abbreviation": "Lon",
        "direction": "east",
        "unit": "degree"
      },
      {
        "name": "Geodetic latitude",
        "abbreviation": "Lat",
        "direction": "north",
        "unit": "degree"
      },
      {
        "name": "Ellipsoidal height",
        "abbreviation": "h",
        "direction": "up",
        "unit": "metre"
      }
    ]
  },
  "scope": "GIS.",
  "area": "France - onshore and offshore, mainland and Corsica (France métropolitaine including Corsica).",
  "bbox": {
    "south_latitude": 41.15,
    "west_longitude": -9.86,
    "north_latitude": 51.56,
    "east_longitude": 10.38
  },
  "id": {
    "authority": "EPSG",
    "code": 9783
  }
}

{'crs_wkt': 'GEOGCRS["RGF93 v2b (lon-lat)",DATUM["Reseau Geodesique Francais '
            '1993 v2b",ELLIPSOID["GRS '
            '1980",6378137,298.257222101,LENGTHUNIT["metre",1]]],PRIMEM["Greenwich",0,ANGLEUNIT["degree",0.0174532925199433]],CS[ellipsoidal,3],AXIS["geodetic '
            'longitude '
            '(Lon)",east,ORDER[1],ANGLEUNIT["degree",0.0174532925199433]],AXIS["geodetic '
            'latitude '
            '(Lat)",north,ORDER[2],ANGLEUNIT["degree",0.0174532925199433]],AXIS["ellipsoidal '
            'height '
            '(h)",up,ORDER[3],LENGTHUNIT["metre",1]],USAGE[SCOPE["GIS."],AREA["France '
            '- onshore and offshore, mainland and Corsica (France '
            'métropolitaine including '
            'Corsica)."],BBOX[41.15,-9.86,51.56,10.38]],ID["EPSG",9783]]',
 'geographic_crs_name': 'RGF93 v2b (lon-lat)',
 'grid_mapping_name': 'latitude_longitude',
 'horizontal_datum_name': 'Reseau Geodesique Francais 1993 v2b',
 'inverse_flattening': 298.257222101,
 'longitude_of_prime_meridian': 0.0,
 'prime_meridian_name': 'Greenwich',
 'reference_ellipsoid_name': 'GRS 1980',
 'semi_major_axis': 6378137.0,
 'semi_minor_axis': 6356752.314140356}