Guadeloupe 1951 - EPSG:5795

WKT

VERTCS["Guadeloupe_1951", 
	VDATUM["Guadeloupe_1951"], 
	PARAMETER["Vertical_Shift", 0.0], 
	PARAMETER["Direction", 1.0], 
	UNIT["Meter", 1.0]]

WKT2

VERTCRS["Guadeloupe_1951", 
	VDATUM["Guadeloupe_1951"], 
	CS[vertical, 1], 
	AXIS["Gravity-related height (H)", up, 
		LENGTHUNIT["Meter", 1.0]], 
	ID["EPSG", "5795"]]

Data from @esri/proj-codes

{
  "wkid": 5795,
  "latestWkid": 5795,
  "macro": "PE_VCS_GUADELOUPE_1951",
  "name": "Guadeloupe_1951",
  "wkt": "VERTCS[\"Guadeloupe_1951\",VDATUM[\"Guadeloupe_1951\"],PARAMETER[\"Vertical_Shift\",0.0],PARAMETER[\"Direction\",1.0],UNIT[\"Meter\",1.0]]",
  "wkt2": "VERTCRS[\"Guadeloupe_1951\",VDATUM[\"Guadeloupe_1951\"],CS[vertical,1],AXIS[\"Gravity-related height (H)\",up,LENGTHUNIT[\"Meter\",1.0]],ID[\"EPSG\",\"5795\"]]",
  "description": "Guadeloupe 1951",
  "authority": "EPSG",
  "version": "6.15(9.3.0.0)",
  "deprecated": "no",
  "areaname": "Guadeloupe - Grande-Terre and Basse-Terre - onshore",
  "extent": {
    "slat": 15.88,
    "nlat": 16.55,
    "llon": -61.85,
    "rlon": -61.15
  }
}