Jouik 1961 - EPSG:4679

WKT

GEOGCS["GCS_Jouik_1961", 
	DATUM["D_Jouik_1961", 
		SPHEROID["Clarke_1880_RGS", 6378249.145, 293.465]], 
	PRIMEM["Greenwich", 0.0], 
	UNIT["Degree", 0.0174532925199433]]

WKT2

GEOGCRS["GCS_Jouik_1961", 
	DATUM["D_Jouik_1961", 
		ELLIPSOID["Clarke_1880_RGS", 6378249.145, 293.465]], 
	PRIMEM["Greenwich", 0.0], 
	CS[ellipsoidal, 2], 
	AXIS["Latitude (lat)", north, 
		ORDER[1]], 
	AXIS["Longitude (lon)", east, 
		ORDER[2]], 
	ANGLEUNIT["Degree", 0.0174532925199433], 
	ID["EPSG", "4679"]]

Data from @esri/proj-codes

{
  "wkid": 4679,
  "latestWkid": 4679,
  "macro": "PE_GCS_JOUIK_1961",
  "name": "GCS_Jouik_1961",
  "wkt": "GEOGCS[\"GCS_Jouik_1961\",DATUM[\"D_Jouik_1961\",SPHEROID[\"Clarke_1880_RGS\",6378249.145,293.465]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]]",
  "wkt2": "GEOGCRS[\"GCS_Jouik_1961\",DATUM[\"D_Jouik_1961\",ELLIPSOID[\"Clarke_1880_RGS\",6378249.145,293.465]],PRIMEM[\"Greenwich\",0.0],CS[ellipsoidal,2],AXIS[\"Latitude (lat)\",north,ORDER[1]],AXIS[\"Longitude (lon)\",east,ORDER[2]],ANGLEUNIT[\"Degree\",0.0174532925199433],ID[\"EPSG\",\"4679\"]]",
  "description": "Jouik 1961",
  "authority": "EPSG",
  "version": "6.11(9.2.0)",
  "deprecated": "no",
  "areaname": "Mauritania - north coast",
  "extent": {
    "slat": 19.37,
    "nlat": 21.34,
    "llon": -17.08,
    "rlon": -15.88
  }
}