This is a larger than standard cut glass Penn style cut glass door knob originally listed in 1927. It’s most likely poured glass but the glass has been cut down so that the center is not perfectly symmetrical, giving it a very specialized almost oval center. It’s quite lovely and well done. This stopper will fit the larger opening of a square Jack Daniels bottle and is too large for the standard Weller Special Reserve. Please keep this in mind when ordering!