Saba - ESRI:115934

WKT

VERTCS["Saba", 
	DATUM["Saba", 
		SPHEROID["International_1924", 6378388.0, 297.0]], 
	PARAMETER["Vertical_Shift", 0.0], 
	PARAMETER["Direction", 1.0], 
	UNIT["Meter", 1.0]]

WKT2

VERTCRS["Saba", 
	DATUM["Saba", 
		ELLIPSOID["International_1924", 6378388.0, 297.0]], 
	CS[vertical, 1], 
	AXIS["Ellipsoidal height (h)", up, 
		LENGTHUNIT["Meter", 1.0]], 
	ID["Esri", "115934"]]

Data from @esri/proj-codes

{
  "wkid": 115934,
  "latestWkid": 115934,
  "macro": "PE_VCS_SABA",
  "name": "Saba",
  "wkt": "VERTCS[\"Saba\",DATUM[\"Saba\",SPHEROID[\"International_1924\",6378388.0,297.0]],PARAMETER[\"Vertical_Shift\",0.0],PARAMETER[\"Direction\",1.0],UNIT[\"Meter\",1.0]]",
  "wkt2": "VERTCRS[\"Saba\",DATUM[\"Saba\",ELLIPSOID[\"International_1924\",6378388.0,297.0]],CS[vertical,1],AXIS[\"Ellipsoidal height (h)\",up,LENGTHUNIT[\"Meter\",1.0]],ID[\"Esri\",\"115934\"]]",
  "description": "Saba",
  "authority": "Esri",
  "version": "13.5.0",
  "deprecated": "no",
  "areaname": "BES Islands - Saba onshore",
  "extent": {
    "slat": 17.56,
    "nlat": 17.71,
    "llon": -63.31,
    "rlon": -63.16
  }
}