PRS 1992 - ESRI:115771

WKT

VERTCS["PRS_1992", 
	DATUM["D_Philippine_Reference_System_1992", 
		SPHEROID["Clarke_1866", 6378206.4, 294.9786982]], 
	PARAMETER["Vertical_Shift", 0.0], 
	PARAMETER["Direction", 1.0], 
	UNIT["Meter", 1.0]]

WKT2

VERTCRS["PRS_1992", 
	DATUM["D_Philippine_Reference_System_1992", 
		ELLIPSOID["Clarke_1866", 6378206.4, 294.9786982]], 
	CS[vertical, 1], 
	AXIS["Ellipsoidal height (h)", up, 
		LENGTHUNIT["Meter", 1.0]], 
	ID["Esri", "115771"]]

Data from @esri/proj-codes

{
  "wkid": 115771,
  "latestWkid": 115771,
  "macro": "PE_VCS_PRS_1992",
  "name": "PRS_1992",
  "wkt": "VERTCS[\"PRS_1992\",DATUM[\"D_Philippine_Reference_System_1992\",SPHEROID[\"Clarke_1866\",6378206.4,294.9786982]],PARAMETER[\"Vertical_Shift\",0.0],PARAMETER[\"Direction\",1.0],UNIT[\"Meter\",1.0]]",
  "wkt2": "VERTCRS[\"PRS_1992\",DATUM[\"D_Philippine_Reference_System_1992\",ELLIPSOID[\"Clarke_1866\",6378206.4,294.9786982]],CS[vertical,1],AXIS[\"Ellipsoidal height (h)\",up,LENGTHUNIT[\"Meter\",1.0]],ID[\"Esri\",\"115771\"]]",
  "description": "PRS 1992",
  "authority": "Esri",
  "version": "10.4.0",
  "deprecated": "no",
  "areaname": "Philippines",
  "extent": {
    "slat": 3,
    "nlat": 22.18,
    "llon": 116.04,
    "rlon": 129.95
  }
}