Bern 1898 (Bern) - EPSG:4801

WKT

GEOGCS["GCS_Bern_1898_Bern", 
	DATUM["D_Bern_1898", 
		SPHEROID["Bessel_1841", 6377397.155, 299.1528128]], 
	PRIMEM["Bern", 7.439583333333332], 
	UNIT["Degree", 0.0174532925199433]]

WKT2

GEOGCRS["GCS_Bern_1898_Bern", 
	DATUM["D_Bern_1898", 
		ELLIPSOID["Bessel_1841", 6377397.155, 299.1528128]], 
	PRIMEM["Bern", 7.439583333333333, 
		ANGLEUNIT["Degree", 0.0174532925199433]], 
	CS[ellipsoidal, 2], 
	AXIS["Latitude (lat)", north, 
		ORDER[1]], 
	AXIS["Longitude (lon)", east, 
		ORDER[2]], 
	ANGLEUNIT["Degree", 0.0174532925199433], 
	ID["EPSG", "4801"]]

Data from @esri/proj-codes

{
  "wkid": 4801,
  "latestWkid": 4801,
  "macro": "PE_GCS_BERN_1898_BERN",
  "name": "GCS_Bern_1898_Bern",
  "wkt": "GEOGCS[\"GCS_Bern_1898_Bern\",DATUM[\"D_Bern_1898\",SPHEROID[\"Bessel_1841\",6377397.155,299.1528128]],PRIMEM[\"Bern\",7.439583333333332],UNIT[\"Degree\",0.0174532925199433]]",
  "wkt2": "GEOGCRS[\"GCS_Bern_1898_Bern\",DATUM[\"D_Bern_1898\",ELLIPSOID[\"Bessel_1841\",6377397.155,299.1528128]],PRIMEM[\"Bern\",7.439583333333333,ANGLEUNIT[\"Degree\",0.0174532925199433]],CS[ellipsoidal,2],AXIS[\"Latitude (lat)\",north,ORDER[1]],AXIS[\"Longitude (lon)\",east,ORDER[2]],ANGLEUNIT[\"Degree\",0.0174532925199433],ID[\"EPSG\",\"4801\"]]",
  "description": "Bern 1898 (Bern)",
  "authority": "EPSG",
  "version": "4.5(3.0.1)",
  "deprecated": "no",
  "areaname": "Europe - Liechtenstein and Switzerland",
  "extent": {
    "slat": 45.81,
    "nlat": 47.81,
    "llon": 5.95,
    "rlon": 10.5
  }
}