Mount Dillon Tobago Grid (Clarke Links) - EPSG:2066

WKT

PROJCS["Mount_Dillon_Tobago_Grid", 
	GEOGCS["GCS_Mount_Dillon", 
		DATUM["D_Mount_Dillon", 
			SPHEROID["Clarke_1858", 6378293.645208759, 294.260676369]], 
		PRIMEM["Greenwich", 0.0], 
		UNIT["Degree", 0.0174532925199433]], 
	PROJECTION["Cassini"], 
	PARAMETER["False_Easting", 187500.0], 
	PARAMETER["False_Northing", 180000.0], 
	PARAMETER["Central_Meridian", -60.68600888888889], 
	PARAMETER["Scale_Factor", 1.0], 
	PARAMETER["Latitude_Of_Origin", 11.25217861111111], 
	UNIT["Link_Clarke", 0.201166195164]]

WKT2

PROJCRS["Mount_Dillon_Tobago_Grid", 
	BASEGEOGCRS["GCS_Mount_Dillon", 
		DATUM["D_Mount_Dillon", 
			ELLIPSOID["Clarke_1858", 6378293.645208759, 294.260676369]], 
		PRIMEM["Greenwich", 0.0], 
		CS[ellipsoidal, 2], 
		AXIS["Latitude (lat)", north, 
			ORDER[1]], 
		AXIS["Longitude (lon)", east, 
			ORDER[2]], 
		ANGLEUNIT["Degree", 0.0174532925199433]], 
	CONVERSION["Cassini", 
		METHOD["Cassini"], 
		PARAMETER["False_Easting", 187500.0, 
			LENGTHUNIT["Link_Clarke", 0.201166195164]], 
		PARAMETER["False_Northing", 180000.0, 
			LENGTHUNIT["Link_Clarke", 0.201166195164]], 
		PARAMETER["Central_Meridian", -60.68600888888889], 
		PARAMETER["Scale_Factor", 1.0], 
		PARAMETER["Latitude_Of_Origin", 11.25217861111111]], 
	CS[Cartesian, 2], 
	AXIS["Easting (X)", east, 
		ORDER[1]], 
	AXIS["Northing (Y)", north, 
		ORDER[2]], 
	LENGTHUNIT["Link_Clarke", 0.201166195164], 
	ID["EPSG", "2066"]]

Data from @esri/proj-codes

{
  "wkid": 2066,
  "latestWkid": 2066,
  "gcsWkid": 4157,
  "macro": "PE_PCS_MOUNT_DILLON_TOBAGO_GRID",
  "name": "Mount_Dillon_Tobago_Grid",
  "wkt": "PROJCS[\"Mount_Dillon_Tobago_Grid\",GEOGCS[\"GCS_Mount_Dillon\",DATUM[\"D_Mount_Dillon\",SPHEROID[\"Clarke_1858\",6378293.645208759,294.260676369]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]],PROJECTION[\"Cassini\"],PARAMETER[\"False_Easting\",187500.0],PARAMETER[\"False_Northing\",180000.0],PARAMETER[\"Central_Meridian\",-60.68600888888889],PARAMETER[\"Scale_Factor\",1.0],PARAMETER[\"Latitude_Of_Origin\",11.25217861111111],UNIT[\"Link_Clarke\",0.201166195164]]",
  "wkt2": "PROJCRS[\"Mount_Dillon_Tobago_Grid\",BASEGEOGCRS[\"GCS_Mount_Dillon\",DATUM[\"D_Mount_Dillon\",ELLIPSOID[\"Clarke_1858\",6378293.645208759,294.260676369]],PRIMEM[\"Greenwich\",0.0],CS[ellipsoidal,2],AXIS[\"Latitude (lat)\",north,ORDER[1]],AXIS[\"Longitude (lon)\",east,ORDER[2]],ANGLEUNIT[\"Degree\",0.0174532925199433]],CONVERSION[\"Cassini\",METHOD[\"Cassini\"],PARAMETER[\"False_Easting\",187500.0,LENGTHUNIT[\"Link_Clarke\",0.201166195164]],PARAMETER[\"False_Northing\",180000.0,LENGTHUNIT[\"Link_Clarke\",0.201166195164]],PARAMETER[\"Central_Meridian\",-60.68600888888889],PARAMETER[\"Scale_Factor\",1.0],PARAMETER[\"Latitude_Of_Origin\",11.25217861111111]],CS[Cartesian,2],AXIS[\"Easting (X)\",east,ORDER[1]],AXIS[\"Northing (Y)\",north,ORDER[2]],LENGTHUNIT[\"Link_Clarke\",0.201166195164],ID[\"EPSG\",\"2066\"]]",
  "description": "Mount Dillon Tobago Grid (Clarke Links)",
  "authority": "EPSG",
  "version": "4.5(8.1.2)",
  "deprecated": "no",
  "areaname": "Trinidad and Tobago - Tobago - onshore",
  "extent": {
    "slat": 11.08,
    "nlat": 11.41,
    "llon": -60.9,
    "rlon": -60.44
  }
}