OGC:CRS27 - NAD27 (CRS27)

{
  "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
  "type": "GeographicCRS",
  "name": "NAD27 (CRS27)",
  "datum": {
    "type": "GeodeticReferenceFrame",
    "name": "North American Datum 1927",
    "ellipsoid": {
      "name": "Clarke 1866",
      "semi_major_axis": 6378206.4,
      "semi_minor_axis": 6356583.8
    }
  },
  "coordinate_system": {
    "subtype": "ellipsoidal",
    "axis": [
      {
        "name": "Geodetic longitude",
        "abbreviation": "Lon",
        "direction": "east",
        "unit": "degree"
      },
      {
        "name": "Geodetic latitude",
        "abbreviation": "Lat",
        "direction": "north",
        "unit": "degree"
      }
    ]
  },
  "scope": "Not known.",
  "area": "North and central America: Antigua and Barbuda - onshore. Bahamas - onshore plus offshore over internal continental shelf only. Belize - onshore. British Virgin Islands - onshore. Canada onshore - Alberta, British Columbia, Manitoba, New Brunswick, Newfoundland and Labrador, Northwest Territories, Nova Scotia, Nunavut, Ontario, Prince Edward Island, Quebec, Saskatchewan and Yukon - plus offshore east coast. Cuba - onshore and offshore. El Salvador - onshore. Guatemala - onshore. Honduras - onshore. Panama - onshore. Puerto Rico - onshore. Mexico - onshore plus offshore east coast. Nicaragua - onshore. United States (USA) onshore and offshore - Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, Florida, Georgia, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin and Wyoming - plus offshore . US Virgin Islands - onshore.",
  "bbox": {
    "south_latitude": 7.15,
    "west_longitude": 167.65,
    "north_latitude": 83.17,
    "east_longitude": -47.74
  },
  "id": {
    "authority": "OGC",
    "code": "CRS27"
  }
}

{'crs_wkt': 'GEOGCRS["NAD27 (CRS27)",DATUM["North American Datum '
            '1927",ELLIPSOID["Clarke '
            '1866",6378206.4,294.978698213898,LENGTHUNIT["metre",1]]],PRIMEM["Greenwich",0,ANGLEUNIT["degree",0.0174532925199433]],CS[ellipsoidal,2],AXIS["geodetic '
            'longitude '
            '(Lon)",east,ORDER[1],ANGLEUNIT["degree",0.0174532925199433]],AXIS["geodetic '
            'latitude '
            '(Lat)",north,ORDER[2],ANGLEUNIT["degree",0.0174532925199433]],USAGE[SCOPE["Not '
            'known."],AREA["North and central America: Antigua and Barbuda - '
            'onshore. Bahamas - onshore plus offshore over internal '
            'continental shelf only. Belize - onshore. British Virgin Islands '
            '- onshore. Canada onshore - Alberta, British Columbia, Manitoba, '
            'New Brunswick, Newfoundland and Labrador, Northwest Territories, '
            'Nova Scotia, Nunavut, Ontario, Prince Edward Island, Quebec, '
            'Saskatchewan and Yukon - plus offshore east coast. Cuba - onshore '
            'and offshore. El Salvador - onshore. Guatemala - onshore. '
            'Honduras - onshore. Panama - onshore. Puerto Rico - onshore. '
            'Mexico - onshore plus offshore east coast. Nicaragua - onshore. '
            'United States (USA) onshore and offshore - Alabama, Alaska, '
            'Arizona, Arkansas, California, Colorado, Connecticut, Delaware, '
            'Florida, Georgia, Idaho, Illinois, Indiana, Iowa, Kansas, '
            'Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, '
            'Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New '
            'Hampshire, New Jersey, New Mexico, New York, North Carolina, '
            'North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, '
            'South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, '
            'Virginia, Washington, West Virginia, Wisconsin and Wyoming - plus '
            'offshore . US Virgin Islands - '
            'onshore."],BBOX[7.15,167.65,83.17,-47.74]],ID["OGC","CRS27"]]',
 'geographic_crs_name': 'NAD27 (CRS27)',
 'grid_mapping_name': 'latitude_longitude',
 'horizontal_datum_name': 'North American Datum 1927',
 'inverse_flattening': 294.9786982138982,
 'longitude_of_prime_meridian': 0.0,
 'prime_meridian_name': 'Greenwich',
 'reference_ellipsoid_name': 'Clarke 1866',
 'semi_major_axis': 6378206.4,
 'semi_minor_axis': 6356583.8}