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"]]