I picked up a Sunbeam several years ago that shares alot of design features with yours Bob. The tops are green porcelain like the lid, the burner is super heavy duty with a shelf under the kettle that holds a grease bucket and junk. After making a new heat diffuser plate and replacing the hose & reg it worked great, both times I used it.
Seems like a fairly well built cart, I'v dragged it in & out of the brush, that grew up around it, a couple times and its still sturdy. It was in the line up for a little while but after a couple days I planned on having a guest and hauled it into the brush so they couldn't see it. I used it to make some bone meal, sterilize sea-weed & chicken shit and put it back in the brush. It cleans up quick & easy too, I could be flippin burgers in 10 min.
This ones almost easy to find around here, but I'v never seen one like yours.