Antigua 1943 - EPSG:4601

WKT

GEOGCS["GCS_Antigua_1943", 
	DATUM["D_Antigua_1943", 
		SPHEROID["Clarke_1880_RGS", 6378249.145, 293.465]], 
	PRIMEM["Greenwich", 0.0], 
	UNIT["Degree", 0.0174532925199433]]

WKT2

GEOGCRS["GCS_Antigua_1943", 
	DATUM["D_Antigua_1943", 
		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", "4601"]]

Data from @esri/proj-codes

{
  "wkid": 4601,
  "latestWkid": 4601,
  "macro": "PE_GCS_ANTIGUA_1943",
  "name": "GCS_Antigua_1943",
  "wkt": "GEOGCS[\"GCS_Antigua_1943\",DATUM[\"D_Antigua_1943\",SPHEROID[\"Clarke_1880_RGS\",6378249.145,293.465]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]]",
  "wkt2": "GEOGCRS[\"GCS_Antigua_1943\",DATUM[\"D_Antigua_1943\",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\",\"4601\"]]",
  "description": "Antigua 1943",
  "authority": "EPSG",
  "version": "6.5(8.0.1)",
  "deprecated": "no",
  "areaname": "Antigua - onshore",
  "extent": {
    "slat": 16.94,
    "nlat": 17.22,
    "llon": -61.95,
    "rlon": -61.61
  }
}