MSK 1942 - ESRI:104135

WKT

GEOGCS["GCS_MSK_1942", 
	DATUM["D_Pulkovo_1942", 
		SPHEROID["Krasovsky_1940", 6378245.0, 298.3]], 
	PRIMEM["Greenwich", 0.0], 
	UNIT["Degree", 0.0174532925199433]]

WKT2

GEOGCRS["GCS_MSK_1942", 
	DATUM["D_Pulkovo_1942", 
		ELLIPSOID["Krasovsky_1940", 6378245.0, 298.3]], 
	PRIMEM["Greenwich", 0.0], 
	CS[ellipsoidal, 2], 
	AXIS["Longitude (lon)", east, 
		ORDER[1]], 
	AXIS["Latitude (lat)", north, 
		ORDER[2]], 
	ANGLEUNIT["Degree", 0.0174532925199433], 
	ID["Esri", "104135"]]

Data from @esri/proj-codes

{
  "wkid": 104135,
  "latestWkid": 104135,
  "macro": "PE_GCS_MSK_1942",
  "name": "GCS_MSK_1942",
  "wkt": "GEOGCS[\"GCS_MSK_1942\",DATUM[\"D_Pulkovo_1942\",SPHEROID[\"Krasovsky_1940\",6378245.0,298.3]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]]",
  "wkt2": "GEOGCRS[\"GCS_MSK_1942\",DATUM[\"D_Pulkovo_1942\",ELLIPSOID[\"Krasovsky_1940\",6378245.0,298.3]],PRIMEM[\"Greenwich\",0.0],CS[ellipsoidal,2],AXIS[\"Longitude (lon)\",east,ORDER[1]],AXIS[\"Latitude (lat)\",north,ORDER[2]],ANGLEUNIT[\"Degree\",0.0174532925199433],ID[\"Esri\",\"104135\"]]",
  "description": "MSK 1942",
  "authority": "Esri",
  "version": "9.2.0",
  "deprecated": "no",
  "areaname": "Mongolia",
  "extent": {
    "slat": 41.58,
    "nlat": 52.15,
    "llon": 87.76,
    "rlon": 119.94
  }
}