We have a Porcelain Ceiling Light with outlet on side Vintage item. It measures about 4 1/2" across the center x about 2 1/2" in H. The light socket opening is about 1 5/8" (outside measurement, inside is about 1"). There is a metal pull chain with some sufrace rust. I cleaned this quickly, it will need a bit further cleaning. It will need to be rewired. I did not see/feel any chips.