Dinny, I've got one almost identical to yours right down to the hand hole. It was made by San Angelo. I checked their website and no longer find it. They must have discontinued it. I was hoping to get another for Patty. The only major difference is that the rear leg telescopes, slides into another short tube and locks in place with a thumb screw. When carrying, the legs are held in place by velcro straps which work well. I bought it on line a few years ago, and can't remember where I found it. If I recall, it was about 69 or 89 bucks. The one they offer now is four legged and has an attached seat that doesn't look all that wonderful.
For the winter, it's taking up space in the game processing room in the barn. I can drag it out and get some pics if anyone wants them.
Pete