Samboja (deprecated at 10.5.0) - EPSG:4125

WKT

GEOGCS["GCS_Samboja", 
	DATUM["D_Samboja", 
		SPHEROID["Bessel_1841", 6377397.155, 299.1528128]], 
	PRIMEM["Greenwich", 0.0], 
	UNIT["Degree", 0.0174532925199433]]

WKT2

GEOGCRS["GCS_Samboja", 
	DATUM["D_Samboja", 
		ELLIPSOID["Bessel_1841", 6377397.155, 299.1528128]], 
	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", "4125"]]

Data from @esri/proj-codes

{
  "wkid": 4125,
  "latestWkid": 4125,
  "macro": "PE_GCS_SAMBOJA",
  "name": "GCS_Samboja",
  "wkt": "GEOGCS[\"GCS_Samboja\",DATUM[\"D_Samboja\",SPHEROID[\"Bessel_1841\",6377397.155,299.1528128]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]]",
  "wkt2": "GEOGCRS[\"GCS_Samboja\",DATUM[\"D_Samboja\",ELLIPSOID[\"Bessel_1841\",6377397.155,299.1528128]],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\",\"4125\"]]",
  "description": "Samboja (deprecated at 10.5.0)",
  "authority": "EPSG",
  "version": "4.0(8.0.1)",
  "deprecated": "yes",
  "areaname": "Indonesia - Kalimantan - Mahakam delta",
  "extent": {
    "slat": -1.24,
    "nlat": 0,
    "llon": 116.72,
    "rlon": 117.99
  }
}