Kousseri - EPSG:4198

WKT

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

WKT2

GEOGCRS["GCS_Kousseri", 
	DATUM["D_Kousseri", 
		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", "4198"]]

Data from @esri/proj-codes

{
  "wkid": 4198,
  "latestWkid": 4198,
  "macro": "PE_GCS_KOUSSERI",
  "name": "GCS_Kousseri",
  "wkt": "GEOGCS[\"GCS_Kousseri\",DATUM[\"D_Kousseri\",SPHEROID[\"Clarke_1880_RGS\",6378249.145,293.465]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]]",
  "wkt2": "GEOGCRS[\"GCS_Kousseri\",DATUM[\"D_Kousseri\",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\",\"4198\"]]",
  "description": "Kousseri",
  "authority": "EPSG",
  "version": "6.5(9.0.0)",
  "deprecated": "no",
  "areaname": "Cameroon - N'Djamena area",
  "extent": {
    "slat": 11.7,
    "nlat": 12.77,
    "llon": 14.17,
    "rlon": 15.09
  }
}