MMS Argentina 2 - EPSG:9254

WKT

PROJCS["MMS_Argentina_2", 
	GEOGCS["MMS", 
		DATUM["Ministerio_de_Marina_Sur", 
			SPHEROID["International_1924", 6378388.0, 297.0]], 
		PRIMEM["Greenwich", 0.0], 
		UNIT["Degree", 0.0174532925199433]], 
	PROJECTION["Transverse_Mercator"], 
	PARAMETER["False_Easting", 2500000.0], 
	PARAMETER["False_Northing", 0.0], 
	PARAMETER["Central_Meridian", -69.0], 
	PARAMETER["Scale_Factor", 1.0], 
	PARAMETER["Latitude_Of_Origin", -90.0], 
	UNIT["Meter", 1.0]]

WKT2

PROJCRS["MMS_Argentina_2", 
	BASEGEOGCRS["MMS", 
		DATUM["Ministerio_de_Marina_Sur", 
			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]], 
	CONVERSION["Transverse_Mercator", 
		METHOD["Transverse_Mercator"], 
		PARAMETER["False_Easting", 2500000.0], 
		PARAMETER["False_Northing", 0.0], 
		PARAMETER["Central_Meridian", -69.0], 
		PARAMETER["Scale_Factor", 1.0], 
		PARAMETER["Latitude_Of_Origin", -90.0]], 
	CS[Cartesian, 2], 
	AXIS["Northing (Y)", north, 
		ORDER[1]], 
	AXIS["Easting (X)", east, 
		ORDER[2]], 
	LENGTHUNIT["Meter", 1.0], 
	ID["EPSG", "9254"]]

Data from @esri/proj-codes

{
  "wkid": 9254,
  "latestWkid": 9254,
  "gcsWkid": 9253,
  "macro": "PE_PCS_MMS_ARGENTINA_2",
  "name": "MMS_Argentina_2",
  "wkt": "PROJCS[\"MMS_Argentina_2\",GEOGCS[\"MMS\",DATUM[\"Ministerio_de_Marina_Sur\",SPHEROID[\"International_1924\",6378388.0,297.0]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]],PROJECTION[\"Transverse_Mercator\"],PARAMETER[\"False_Easting\",2500000.0],PARAMETER[\"False_Northing\",0.0],PARAMETER[\"Central_Meridian\",-69.0],PARAMETER[\"Scale_Factor\",1.0],PARAMETER[\"Latitude_Of_Origin\",-90.0],UNIT[\"Meter\",1.0]]",
  "wkt2": "PROJCRS[\"MMS_Argentina_2\",BASEGEOGCRS[\"MMS\",DATUM[\"Ministerio_de_Marina_Sur\",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]],CONVERSION[\"Transverse_Mercator\",METHOD[\"Transverse_Mercator\"],PARAMETER[\"False_Easting\",2500000.0],PARAMETER[\"False_Northing\",0.0],PARAMETER[\"Central_Meridian\",-69.0],PARAMETER[\"Scale_Factor\",1.0],PARAMETER[\"Latitude_Of_Origin\",-90.0]],CS[Cartesian,2],AXIS[\"Northing (Y)\",north,ORDER[1]],AXIS[\"Easting (X)\",east,ORDER[2]],LENGTHUNIT[\"Meter\",1.0],ID[\"EPSG\",\"9254\"]]",
  "description": "MMS Argentina 2",
  "authority": "EPSG",
  "version": "9.8.5(12.6.0)",
  "deprecated": "no",
  "areaname": "Argentina - Tierra del Fuego onshore",
  "extent": {
    "slat": -55.11,
    "nlat": -52.59,
    "llon": -68.64,
    "rlon": -63.73
  }
}