I got this from the bay of evil, with a trivet and an interesting bowl, but without the flame spreader. There is a strange ring present, which I've not seen before. The pump leather is a bit stiff, but looks like it can be softened enough to use it. The bottom is marked AT over H. The trivet is unmarked and very rusty. The stamped writing on the top of the tank is virtually gone, but the writing on the sides is fine. I think I'll try to get it going, and gently clean it up, to preserve the patina.
You’ll need inner and outer burner caps. The ring that came with your stove is not part of the burner. It looks like part of the fuel filter on a Coleman fuel funnel. Your stove is 1954 (AT). Cheers Tony