Seller: gozhven (5,944) 100%, Location: Holbrook, Massachusetts, Ships to: Worldwide, Item: 302130986548 Presenting one antique doorknob of unknown origin. Measures 2.25" in diameter. The base has a square hole and is cast iron. The knob itself is brilliantly laquered and except for a tiny chip in the surface, is quite smooth and reflective. Its construction puzzles me. A look under the surface from where the chip is looks like a clay-like substance but the unit is quite heavy as if it is all cast iron with some type of coating over the knob portion. The unit weighs 6 ounces. I am sure a collector will know more than I do. There is no company name or other info on the piece but it is believed to be early 20th century. Please contact me with any questions. Shipping is exact as I do not profit from shipping charges. Thank you very much.