PROJCS["Sierra Leone 1924 / New Colony Grid",
    GEOGCS["Sierra Leone 1924",
        DATUM["Sierra_Leone_Colony_1924",
            SPHEROID["War Office",6378300,296,
                AUTHORITY["EPSG","7029"]],
            AUTHORITY["EPSG","6174"]],
        PRIMEM["Greenwich",0,
            AUTHORITY["EPSG","8901"]],
        UNIT["degree",0.0174532925199433,
            AUTHORITY["EPSG","9122"]],
        AUTHORITY["EPSG","4174"]],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["latitude_of_origin",6.66666666666667],
    PARAMETER["central_meridian",-12],
    PARAMETER["scale_factor",1],
    PARAMETER["false_easting",500000],
    PARAMETER["false_northing",0],
    UNIT["Gold Coast foot",0.304799710181509,
        AUTHORITY["EPSG","9094"]],
    AXIS["Easting",EAST],
    AXIS["Northing",NORTH],
    AUTHORITY["EPSG","2159"]]