@brewtownbeatdown - you are truly amazing! The American 3 legged version shown, comes close to what I have but....... question? Where did you get the info that Structo made a steel version?
So, here is my observation so far, looking at the American version by Structo. What I have has many similarities to the American, including the shape and size of the lid and a bowl, triangle although different seems to be about the same height off the ground, and similar center vents with lever. Biggest diff. I see is the shape of the triangle, leg mount locations ( mine mounts to the bottom of the bowl with the brackets upside down?), handles, and lid hinge system.
Either Structo or made by unknown company back in 60's or 70's.... I am cool with it. I would love to see a pic of the real deal though, so I can restore it back to how it was.
@lksdrinker - lower center vent control sys. all seems to be how it came from the factory. All stock.