NAD 1983 CSRS Prince Edward Island - EPSG:2291

WKT

PROJCS["NAD_1983_CSRS_Prince_Edward_Island", 
	GEOGCS["GCS_North_American_1983_CSRS", 
		DATUM["D_North_American_1983_CSRS", 
			SPHEROID["GRS_1980", 6378137.0, 298.257222101]], 
		PRIMEM["Greenwich", 0.0], 
		UNIT["Degree", 0.0174532925199433]], 
	PROJECTION["Double_Stereographic"], 
	PARAMETER["False_Easting", 400000.0], 
	PARAMETER["False_Northing", 800000.0], 
	PARAMETER["Central_Meridian", -63.0], 
	PARAMETER["Scale_Factor", 0.999912], 
	PARAMETER["Latitude_Of_Origin", 47.25], 
	UNIT["Meter", 1.0]]

WKT2

PROJCRS["NAD_1983_CSRS_Prince_Edward_Island", 
	BASEGEOGCRS["GCS_North_American_1983_CSRS", 
		DATUM["D_North_American_1983_CSRS", 
			ELLIPSOID["GRS_1980", 6378137.0, 298.257222101]], 
		PRIMEM["Greenwich", 0.0], 
		CS[ellipsoidal, 2], 
		AXIS["Latitude (lat)", north, 
			ORDER[1]], 
		AXIS["Longitude (lon)", east, 
			ORDER[2]], 
		ANGLEUNIT["Degree", 0.0174532925199433]], 
	CONVERSION["Double_Stereographic", 
		METHOD["Double_Stereographic"], 
		PARAMETER["False_Easting", 400000.0], 
		PARAMETER["False_Northing", 800000.0], 
		PARAMETER["Central_Meridian", -63.0], 
		PARAMETER["Scale_Factor", 0.999912], 
		PARAMETER["Latitude_Of_Origin", 47.25]], 
	CS[Cartesian, 2], 
	AXIS["Easting (X)", east, 
		ORDER[1]], 
	AXIS["Northing (Y)", north, 
		ORDER[2]], 
	LENGTHUNIT["Meter", 1.0], 
	ID["EPSG", "2954"]]

Data from @esri/proj-codes

{
  "wkid": 2291,
  "latestWkid": 2954,
  "gcsWkid": 4617,
  "macro": "PE_PCS_NAD_1983_CSRS_PEI",
  "name": "NAD_1983_CSRS_Prince_Edward_Island",
  "wkt": "PROJCS[\"NAD_1983_CSRS_Prince_Edward_Island\",GEOGCS[\"GCS_North_American_1983_CSRS\",DATUM[\"D_North_American_1983_CSRS\",SPHEROID[\"GRS_1980\",6378137.0,298.257222101]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]],PROJECTION[\"Double_Stereographic\"],PARAMETER[\"False_Easting\",400000.0],PARAMETER[\"False_Northing\",800000.0],PARAMETER[\"Central_Meridian\",-63.0],PARAMETER[\"Scale_Factor\",0.999912],PARAMETER[\"Latitude_Of_Origin\",47.25],UNIT[\"Meter\",1.0]]",
  "wkt2": "PROJCRS[\"NAD_1983_CSRS_Prince_Edward_Island\",BASEGEOGCRS[\"GCS_North_American_1983_CSRS\",DATUM[\"D_North_American_1983_CSRS\",ELLIPSOID[\"GRS_1980\",6378137.0,298.257222101]],PRIMEM[\"Greenwich\",0.0],CS[ellipsoidal,2],AXIS[\"Latitude (lat)\",north,ORDER[1]],AXIS[\"Longitude (lon)\",east,ORDER[2]],ANGLEUNIT[\"Degree\",0.0174532925199433]],CONVERSION[\"Double_Stereographic\",METHOD[\"Double_Stereographic\"],PARAMETER[\"False_Easting\",400000.0],PARAMETER[\"False_Northing\",800000.0],PARAMETER[\"Central_Meridian\",-63.0],PARAMETER[\"Scale_Factor\",0.999912],PARAMETER[\"Latitude_Of_Origin\",47.25]],CS[Cartesian,2],AXIS[\"Easting (X)\",east,ORDER[1]],AXIS[\"Northing (Y)\",north,ORDER[2]],LENGTHUNIT[\"Meter\",1.0],ID[\"EPSG\",\"2954\"]]",
  "description": "NAD 1983 CSRS Prince Edward Island",
  "authority": "EPSG",
  "version": "5.1(8.1.2)",
  "deprecated": "codechange",
  "areaname": "Canada - Prince Edward Island",
  "extent": {
    "slat": 45.9,
    "nlat": 47.09,
    "llon": -64.49,
    "rlon": -61.9
  }
}