Early Vtg Spun or Brushed Aluminum Walter Von Nessen Swing arm lamp w patent

Up for consideration is a Vintage Brushed Aluminum early Walter Von Nessen Swing arm Mid Century Modern Table lamp. It has all the early patent dates at the joint and is pretty good condition. By that I mean no dings or dimples. The metal on the top part of the base is slightly discolored. It has the early silver colored socket with a different shade set up than the older pieces have...not sure if has been changed... There is a wood grained metal plate usually with a cast iron weighted bottom...usually it is signed on the iron base. It stands 13.5 inches in height by 10 inches wide with the arm closed and 20 inches with the arm extended fully.  Please see photos as part of the description. It comes from a clean nonsmokers estate. If you have any questions or something to share feel free to message me. Buyer pays shipping. Please check out my other listings...  Best Regards, John JohnnyCrystal Est. 1987