This is what I believe to be a Perkins or Perko  Marine Lamp/Nautical Ship Lantern with Clear Glass.From the base to the top it measures 16". There are 2 of the cage wires that are loose but still in place and will  do my best in packaging and shipping it to prevent them from moving. It is in untested as found condition- I only dusted off the surface dirt. Please refer to pictures and feel free to contact with any questions or if anyone has more information as to the specific brand this lantern is as I am not at all certain.