EPSG:4201 — Adindan

GEOGCRS[
    "Adindan",
    DATUM[
        "Adindan",
        ELLIPSOID[
            "Clarke 1880 (RGS)",
            6378249.145,
            293.465,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",7012]
        ],
        ID["EPSG",6201]
    ],
    CS[ellipsoidal,2,ID["EPSG",6422]],
    AXIS["Geodetic latitude (Lat)",north],
    AXIS["Geodetic longitude (Lon)",east],
    ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
    ID["EPSG",4201]
]

+proj=longlat +a=6378249.145 +rf=293.465 +towgs84=-166,-15,204,0,0,0,0 +no_defs +type=crs

proj4.defs("EPSG:4201", "+proj=longlat +a=6378249.145 +rf=293.465 +towgs84=-166,-15,204,0,0,0,0 +no_defs +type=crs");

{
  "type": "CoordinateReferenceSystem",
  "code": 4201,
  "name": "Adindan",
  "kind": "geographic 2D",
  "area": "Africa - Eritrea, Ethiopia, South Sudan and Sudan",
  "unit": "degree (supplier to define representation)",
  "bbox": [
    3.4,
    21.82,
    22.24,
    47.99
  ],
  "proj4": "+proj=longlat +a=6378249.145 +rf=293.465 +towgs84=-166,-15,204,0,0,0,0 +no_defs +type=crs"
}

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (4201, 'EPSG', 4201, '+proj=longlat +a=6378249.145 +rf=293.465 +towgs84=-166,-15,204,0,0,0,0 +no_defs +type=crs', 'GEOGCS["Adindan",DATUM["Adindan",SPHEROID["Clarke 1880 (RGS)",6378249.145,293.465],TOWGS84[-166,-15,204,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4201"]]');

PROJECTION
  "+proj=longlat"
  "+a=6378249.145"
  "+rf=293.465"
  "+towgs84=-166,-15,204,0,0,0,0"
  "+no_defs"
  "+type=crs"
END

4201=GEOGCS["Adindan",DATUM["Adindan",SPHEROID["Clarke 1880 (RGS)",6378249.145,293.465],TOWGS84[-166,-15,204,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4201"]]