GEOGCS["Unknown datum based upon the Struve 1860 ellipsoid (deprecated)",
    DATUM["Not_specified_based_on_Struve_1860_ellipsoid",
        SPHEROID["Struve 1860",6378298.3,294.73,
            AUTHORITY["EPSG","7028"]],
        AUTHORITY["EPSG","6028"]],
    PRIMEM["Greenwich",0,
        AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.0174532925199433,
        AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","4028"]]