South American Datum 1969 - EPSG:4291

WKT

GEOGCS["GCS_South_American_1969", 
	DATUM["D_South_American_1969", 
		SPHEROID["GRS_1967_Truncated", 6378160.0, 298.25]], 
	PRIMEM["Greenwich", 0.0], 
	UNIT["Degree", 0.0174532925199433]]

WKT2

GEOGCRS["GCS_South_American_1969", 
	DATUM["D_South_American_1969", 
		ELLIPSOID["GRS_1967_Truncated", 6378160.0, 298.25]], 
	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", "4618"]]

Data from @esri/proj-codes

{
  "wkid": 4291,
  "latestWkid": 4618,
  "macro": "PE_GCS_SAD_1969",
  "name": "GCS_South_American_1969",
  "wkt": "GEOGCS[\"GCS_South_American_1969\",DATUM[\"D_South_American_1969\",SPHEROID[\"GRS_1967_Truncated\",6378160.0,298.25]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]]",
  "wkt2": "GEOGCRS[\"GCS_South_American_1969\",DATUM[\"D_South_American_1969\",ELLIPSOID[\"GRS_1967_Truncated\",6378160.0,298.25]],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\",\"4618\"]]",
  "description": "South American Datum 1969",
  "authority": "EPSG",
  "version": "3.2(4.0.0)",
  "deprecated": "codechange",
  "areaname": "South America - SAD69 by country",
  "extent": {
    "slat": -55.96,
    "nlat": 12.52,
    "llon": -91.72,
    "rlon": -25.28
  }
}