Antique Pair Lamps Brass Base Stem Suspended Cut Glass Prisms With 1 Glass Shade

Antique brass, possibly attributed to Cornelius & Co. They feature a brass base and stem, with a round bobeche from which cut glass prisms are suspended. One glass shade - the other one broke and was discarded. Thought to originally be used with oil and converted with electricity. I have not tested the lights because the cords are old and not grounded so they are unsafe to use until the cords are replaced. One prism is cracked and a piece is missing (see images). 15" tall with shade, 11" without the shade and light bulb, 14" tall with light bulb. Weighs 8 lbs before packaging.