Here is a site that shows a gas kettle from the 70's. I am not sure when they quit making them. Go to the '70's and there is a picture there.
I am wondering if the stand is still with the bowl.
Team: Pyle's BBQ; Yoder YS640; Good-One "Trail Boss" 60T; Homemade rig; 22" Weber Kettle w/rotisserie ring; Big A$$ Rotisserie; BGE-Small; Weber Kettle Gold, Weber OTS, New Braunfels offset smoker.
Saddles BBQ Bistro