DOS 1968 - ESRI:37218

WKT

GEOGCS["GCS_DOS_1968", 
	DATUM["D_DOS_1968", 
		SPHEROID["International_1924", 6378388.0, 297.0]], 
	PRIMEM["Greenwich", 0.0], 
	UNIT["Degree", 0.0174532925199433]]

WKT2

GEOGCRS["GCS_DOS_1968", 
	DATUM["D_DOS_1968", 
		ELLIPSOID["International_1924", 6378388.0, 297.0]], 
	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", "37218"]]

Data from @esri/proj-codes

{
  "wkid": 37218,
  "latestWkid": 37218,
  "macro": "PE_GCS_DOS_1968",
  "name": "GCS_DOS_1968",
  "wkt": "GEOGCS[\"GCS_DOS_1968\",DATUM[\"D_DOS_1968\",SPHEROID[\"International_1924\",6378388.0,297.0]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]]",
  "wkt2": "GEOGCRS[\"GCS_DOS_1968\",DATUM[\"D_DOS_1968\",ELLIPSOID[\"International_1924\",6378388.0,297.0]],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\",\"37218\"]]",
  "description": "DOS 1968",
  "authority": "Esri",
  "version": "4.0.0",
  "deprecated": "no",
  "areaname": "Solomon Islands - New Georgia - Ghizo (Gizo)",
  "extent": {
    "slat": -8.86,
    "nlat": -7.52,
    "llon": 156.44,
    "rlon": 158.2
  }
}