See pictures for best description of this vintage ceiling fixture.  You can decide its style as I just guessed in my title.  I have many pictures to view so you can get a good idea on this fixture.  At maximum diameter it is 18 inches across.  The panels are not metal but may be fiberglass or some type of plastic.  They really look like metal.  The black frame is metal.  You can see that there are spots of white paint on it.  Also, on one of the panel's outer side some of the brown antique-ish paint has worn off just a bit. The glass cover is in good shape - no cracks or chips.  From top to bottom of this fixture is a distance of about nine inches.  It weighs about 6 pounds. The wiring appears okay but I have not tried it out.  If I were going to use it, I would modify it for LED lighting.  It was made without a ground wire; so it would not meet today's safety standards.  It would still work, but I would encourage that a trained technician install it and make sure it is grounded.  I am happy to send more pictures or answer questions.  Thanks for looking.