EPSG:10660 — HD72 / EOV + EOMA 1980 height

COMPOUNDCRS[
    "HD72 / EOV + EOMA 1980 height",
    PROJCRS[
        "HD72 / EOV",
        BASEGEOGCRS[
            "HD72",
            DATUM[
                "Hungarian Datum 1972",
                ELLIPSOID[
                    "GRS 1967",
                    6378160,
                    298.247167427,
                    LENGTHUNIT["metre",1,ID["EPSG",9001]],
                    ID["EPSG",7036]
                ],
                ID["EPSG",6237]
            ],
            ID["EPSG",4237]
        ],
        CONVERSION[
            "Egyseges Orszagos Vetuleti",
            METHOD["Hotine Oblique Mercator (variant B)",ID["EPSG",9815]],
            PARAMETER[
                "Latitude of projection centre",
                47.1443937222225,
                ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
                ID["EPSG",8811]
            ],
            PARAMETER[
                "Longitude of projection centre",
                19.0485717777781,
                ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
                ID["EPSG",8812]
            ],
            PARAMETER[
                "Azimuth at projection centre",
                90,
                ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
                ID["EPSG",8813]
            ],
            PARAMETER[
                "Angle from Rectified to Skew Grid",
                90,
                ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
                ID["EPSG",8814]
            ],
            PARAMETER[
                "Scale factor at projection centre",
                0.99993,
                SCALEUNIT["unity",1,ID["EPSG",9201]],
                ID["EPSG",8815]
            ],
            PARAMETER[
                "Easting at projection centre",
                650000,
                LENGTHUNIT["metre",1,ID["EPSG",9001]],
                ID["EPSG",8816]
            ],
            PARAMETER[
                "Northing at projection centre",
                200000,
                LENGTHUNIT["metre",1,ID["EPSG",9001]],
                ID["EPSG",8817]
            ],
            ID["EPSG",19931]
        ],
        CS[Cartesian,2,ID["EPSG",4498]],
        AXIS["Easting (Y)",east],
        AXIS["Northing (X)",north],
        LENGTHUNIT["metre",1,ID["EPSG",9001]],
        ID["EPSG",23700]
    ],
    VERTCRS[
        "EOMA 1980 height",
        VDATUM["Baltic 1980",ID["EPSG",5185]],
        CS[vertical,1,ID["EPSG",6499]],
        AXIS["Gravity-related height (H)",up],
        LENGTHUNIT["metre",1,ID["EPSG",9001]],
        ID["EPSG",5787]
    ],
    ID["EPSG",10660]
]