New Zealand Geodetic Datum 1949 - EPSG:4272

WKT

GEOGCS["GCS_New_Zealand_1949", 
	DATUM["D_New_Zealand_1949", 
		SPHEROID["International_1924", 6378388.0, 297.0]], 
	PRIMEM["Greenwich", 0.0], 
	UNIT["Degree", 0.0174532925199433]]

WKT2

GEOGCRS["GCS_New_Zealand_1949", 
	DATUM["D_New_Zealand_1949", 
		ELLIPSOID["International_1924", 6378388.0, 297.0]], 
	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", "4272"]]

Data from @esri/proj-codes

{
  "wkid": 4272,
  "latestWkid": 4272,
  "macro": "PE_GCS_NZGD_1949",
  "name": "GCS_New_Zealand_1949",
  "wkt": "GEOGCS[\"GCS_New_Zealand_1949\",DATUM[\"D_New_Zealand_1949\",SPHEROID[\"International_1924\",6378388.0,297.0]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]]",
  "wkt2": "GEOGCRS[\"GCS_New_Zealand_1949\",DATUM[\"D_New_Zealand_1949\",ELLIPSOID[\"International_1924\",6378388.0,297.0]],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\",\"4272\"]]",
  "description": "New Zealand Geodetic Datum 1949",
  "authority": "EPSG",
  "version": "5.1(3.0.1)",
  "deprecated": "no",
  "areaname": "New Zealand - onshore and nearshore",
  "extent": {
    "slat": -47.65,
    "nlat": -33.89,
    "llon": 165.87,
    "rlon": 179.27
  }
}