EPSG:5759 — Auckland 1946 height

VERTCRS[
    "Auckland 1946 height",
    VDATUM["Auckland 1946",ID["EPSG",5157]],
    CS[vertical,1,ID["EPSG",6499]],
    AXIS["Gravity-related height (H)",up],
    LENGTHUNIT["metre",1,ID["EPSG",9001]],
    ID["EPSG",5759]
]

+vunits=m +no_defs +type=crs

proj4.defs("EPSG:5759", "+vunits=m +no_defs +type=crs");

{
  "type": "CoordinateReferenceSystem",
  "code": 5759,
  "name": "Auckland 1946 height",
  "kind": "vertical",
  "area": "New Zealand - North Island - Auckland vcrs",
  "unit": "metre",
  "bbox": [
    -37.67,
    174,
    -36.12,
    176.17
  ],
  "proj4": "+vunits=m +no_defs +type=crs"
}

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (5759, 'EPSG', 5759, '+vunits=m +no_defs +type=crs', 'VERT_CS["Auckland 1946 height",VERT_DATUM["Auckland 1946",2005,AUTHORITY["EPSG","5157"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","5759"]]');

PROJECTION
  "+vunits=m"
  "+no_defs"
  "+type=crs"
END

5759=VERT_CS["Auckland 1946 height",VERT_DATUM["Auckland 1946",2005,AUTHORITY["EPSG","5157"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","5759"]]