Voirol 1879 Nord Algerie Ancienne - EPSG:30493

WKT

PROJCS["Voirol_1879_Nord_Algerie_Ancienne", 
	GEOGCS["GCS_Voirol_1879", 
		DATUM["D_Voirol_1879", 
			SPHEROID["Clarke_1880_IGN", 6378249.2, 293.4660212936265]], 
		PRIMEM["Greenwich", 0.0], 
		UNIT["Degree", 0.0174532925199433]], 
	PROJECTION["Lambert_Conformal_Conic"], 
	PARAMETER["False_Easting", 500000.0], 
	PARAMETER["False_Northing", 300000.0], 
	PARAMETER["Central_Meridian", 2.7], 
	PARAMETER["Standard_Parallel_1", 36.0], 
	PARAMETER["Scale_Factor", 0.999625544], 
	PARAMETER["Latitude_Of_Origin", 36.0], 
	UNIT["Meter", 1.0]]

WKT2

PROJCRS["Voirol_1879_Nord_Algerie_Ancienne", 
	BASEGEOGCRS["GCS_Voirol_1879", 
		DATUM["D_Voirol_1879", 
			ELLIPSOID["Clarke_1880_IGN", 6378249.2, 293.4660212936265]], 
		PRIMEM["Greenwich", 0.0], 
		CS[ellipsoidal, 2], 
		AXIS["Latitude (lat)", north, 
			ORDER[1]], 
		AXIS["Longitude (lon)", east, 
			ORDER[2]], 
		ANGLEUNIT["Degree", 0.0174532925199433]], 
	CONVERSION["Lambert_Conformal_Conic", 
		METHOD["Lambert_Conformal_Conic"], 
		PARAMETER["False_Easting", 500000.0], 
		PARAMETER["False_Northing", 300000.0], 
		PARAMETER["Central_Meridian", 2.7], 
		PARAMETER["Standard_Parallel_1", 36.0], 
		PARAMETER["Scale_Factor", 0.999625544], 
		PARAMETER["Latitude_Of_Origin", 36.0]], 
	CS[Cartesian, 2], 
	AXIS["Easting (X)", east, 
		ORDER[1]], 
	AXIS["Northing (Y)", north, 
		ORDER[2]], 
	LENGTHUNIT["Meter", 1.0], 
	ID["EPSG", "30493"]]

Data from @esri/proj-codes

{
  "wkid": 30493,
  "latestWkid": 30493,
  "gcsWkid": 4671,
  "macro": "PE_PCS_VOIROL_1879_N_ALGERIE_ANCIENNE",
  "name": "Voirol_1879_Nord_Algerie_Ancienne",
  "wkt": "PROJCS[\"Voirol_1879_Nord_Algerie_Ancienne\",GEOGCS[\"GCS_Voirol_1879\",DATUM[\"D_Voirol_1879\",SPHEROID[\"Clarke_1880_IGN\",6378249.2,293.4660212936265]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]],PROJECTION[\"Lambert_Conformal_Conic\"],PARAMETER[\"False_Easting\",500000.0],PARAMETER[\"False_Northing\",300000.0],PARAMETER[\"Central_Meridian\",2.7],PARAMETER[\"Standard_Parallel_1\",36.0],PARAMETER[\"Scale_Factor\",0.999625544],PARAMETER[\"Latitude_Of_Origin\",36.0],UNIT[\"Meter\",1.0]]",
  "wkt2": "PROJCRS[\"Voirol_1879_Nord_Algerie_Ancienne\",BASEGEOGCRS[\"GCS_Voirol_1879\",DATUM[\"D_Voirol_1879\",ELLIPSOID[\"Clarke_1880_IGN\",6378249.2,293.4660212936265]],PRIMEM[\"Greenwich\",0.0],CS[ellipsoidal,2],AXIS[\"Latitude (lat)\",north,ORDER[1]],AXIS[\"Longitude (lon)\",east,ORDER[2]],ANGLEUNIT[\"Degree\",0.0174532925199433]],CONVERSION[\"Lambert_Conformal_Conic\",METHOD[\"Lambert_Conformal_Conic\"],PARAMETER[\"False_Easting\",500000.0],PARAMETER[\"False_Northing\",300000.0],PARAMETER[\"Central_Meridian\",2.7],PARAMETER[\"Standard_Parallel_1\",36.0],PARAMETER[\"Scale_Factor\",0.999625544],PARAMETER[\"Latitude_Of_Origin\",36.0]],CS[Cartesian,2],AXIS[\"Easting (X)\",east,ORDER[1]],AXIS[\"Northing (Y)\",north,ORDER[2]],LENGTHUNIT[\"Meter\",1.0],ID[\"EPSG\",\"30493\"]]",
  "description": "Voirol 1879 Nord Algerie Ancienne",
  "authority": "EPSG",
  "version": "6.5(9.2.0)",
  "deprecated": "no",
  "areaname": "Algeria - north of 34~39'N",
  "extent": {
    "slat": 34.64,
    "nlat": 37.14,
    "llon": -2.22,
    "rlon": 8.64
  }
}