Green Glass Flask/Beaker 1960's Lamp??

I obtained this wonderful green glass lamp with original shade and cord when a friend passed away. I am not able to find any markings, but I remember it in her home in the early 1960's. It is a wonderful lamp, but I have no idea of a maker or anything about it, but I love it. It reminds me of a Tommi Parzinger, with the double rings on the glass, but I am not sure. Any help would sure be appreciated.
Thanks