Opalescent White on Clear Glass "Sheldon Swirl" Pattern Oil Lamp with chip underneath Base as shown in the last 2 photos. Includes a #1 size "Queen Ann Burner" and a Fancy Wavy Top Chimney. No Cracks or Fractures, but these art glass lamps are also known to contain silica pods or seeds in the glass, known as imperfections. I found one under the bottom of the fount.
Measures : Overall 15 1/2 inches High from base to top of Chimney, and 8 inches High from the Base to the top of the brass collar on the lamp alone.
Weight : 1 pound and 9.9 Ounces.