NTF Paris Corse (grads) (deprecated, 3.6, use 27564) - EPSG:27594

WKT

PROJCS["NTF_Paris_Corse", 
	GEOGCS["GCS_NTF_Paris", 
		DATUM["D_NTF", 
			SPHEROID["Clarke_1880_IGN", 6378249.2, 293.4660212936265]], 
		PRIMEM["Paris", 2.337229166666667], 
		UNIT["Grad", 0.01570796326794897]], 
	PROJECTION["Lambert_Conformal_Conic"], 
	PARAMETER["False_Easting", 234.358], 
	PARAMETER["False_Northing", 185861.369], 
	PARAMETER["Central_Meridian", 0.0], 
	PARAMETER["Standard_Parallel_1", 46.85], 
	PARAMETER["Scale_Factor", 0.99994471], 
	PARAMETER["Latitude_Of_Origin", 46.85], 
	UNIT["Meter", 1.0]]

WKT2

PROJCRS["NTF_Paris_Corse", 
	BASEGEOGCRS["GCS_NTF_Paris", 
		DATUM["D_NTF", 
			ELLIPSOID["Clarke_1880_IGN", 6378249.2, 293.4660212936265]], 
		PRIMEM["Paris", 2.337229166666667, 
			ANGLEUNIT["Degree", 0.0174532925199433]], 
		CS[ellipsoidal, 2], 
		AXIS["Latitude (lat)", north, 
			ORDER[1]], 
		AXIS["Longitude (lon)", east, 
			ORDER[2]], 
		ANGLEUNIT["Grad", 0.01570796326794897]], 
	CONVERSION["Lambert_Conformal_Conic", 
		METHOD["Lambert_Conformal_Conic"], 
		PARAMETER["False_Easting", 234.358], 
		PARAMETER["False_Northing", 185861.369], 
		PARAMETER["Central_Meridian", 0.0, 
			ANGLEUNIT["Grad", 0.01570796326794897]], 
		PARAMETER["Standard_Parallel_1", 46.85, 
			ANGLEUNIT["Grad", 0.01570796326794897]], 
		PARAMETER["Scale_Factor", 0.99994471], 
		PARAMETER["Latitude_Of_Origin", 46.85, 
			ANGLEUNIT["Grad", 0.01570796326794897]]], 
	CS[Cartesian, 2], 
	AXIS["Easting (X)", east, 
		ORDER[1]], 
	AXIS["Northing (Y)", north, 
		ORDER[2]], 
	LENGTHUNIT["Meter", 1.0], 
	ID["EPSG", "27594"]]

Data from @esri/proj-codes

{
  "wkid": 27594,
  "latestWkid": 27594,
  "gcsWkid": 4807,
  "macro": "PE_PCS_NTF_CORSE",
  "name": "NTF_Paris_Corse",
  "wkt": "PROJCS[\"NTF_Paris_Corse\",GEOGCS[\"GCS_NTF_Paris\",DATUM[\"D_NTF\",SPHEROID[\"Clarke_1880_IGN\",6378249.2,293.4660212936265]],PRIMEM[\"Paris\",2.337229166666667],UNIT[\"Grad\",0.01570796326794897]],PROJECTION[\"Lambert_Conformal_Conic\"],PARAMETER[\"False_Easting\",234.358],PARAMETER[\"False_Northing\",185861.369],PARAMETER[\"Central_Meridian\",0.0],PARAMETER[\"Standard_Parallel_1\",46.85],PARAMETER[\"Scale_Factor\",0.99994471],PARAMETER[\"Latitude_Of_Origin\",46.85],UNIT[\"Meter\",1.0]]",
  "wkt2": "PROJCRS[\"NTF_Paris_Corse\",BASEGEOGCRS[\"GCS_NTF_Paris\",DATUM[\"D_NTF\",ELLIPSOID[\"Clarke_1880_IGN\",6378249.2,293.4660212936265]],PRIMEM[\"Paris\",2.337229166666667,ANGLEUNIT[\"Degree\",0.0174532925199433]],CS[ellipsoidal,2],AXIS[\"Latitude (lat)\",north,ORDER[1]],AXIS[\"Longitude (lon)\",east,ORDER[2]],ANGLEUNIT[\"Grad\",0.01570796326794897]],CONVERSION[\"Lambert_Conformal_Conic\",METHOD[\"Lambert_Conformal_Conic\"],PARAMETER[\"False_Easting\",234.358],PARAMETER[\"False_Northing\",185861.369],PARAMETER[\"Central_Meridian\",0.0,ANGLEUNIT[\"Grad\",0.01570796326794897]],PARAMETER[\"Standard_Parallel_1\",46.85,ANGLEUNIT[\"Grad\",0.01570796326794897]],PARAMETER[\"Scale_Factor\",0.99994471],PARAMETER[\"Latitude_Of_Origin\",46.85,ANGLEUNIT[\"Grad\",0.01570796326794897]]],CS[Cartesian,2],AXIS[\"Easting (X)\",east,ORDER[1]],AXIS[\"Northing (Y)\",north,ORDER[2]],LENGTHUNIT[\"Meter\",1.0],ID[\"EPSG\",\"27594\"]]",
  "description": "NTF Paris Corse (grads) (deprecated, 3.6, use 27564)",
  "authority": "EPSG",
  "version": "2.1(3.0.1)",
  "deprecated": "yes",
  "areaname": "France - Corsica onshore",
  "extent": {
    "slat": 41.31,
    "nlat": 43.07,
    "llon": 8.5,
    "rlon": 9.63
  }
}