This is a "Camper" Model 1 single mantle lantern. It is stamped on the collar Hong Kong and I believe that it was made buy the same company that made UNIMET. (Union Metal Works) I have the GL-3 as does Neil and side by side they are Identical with the exception of the pump knob. The knob on the Camper is black plastic and there GL-3 Unimet is chromed metal
It does look like that. Shows that my Photography skills are not honed real well. I think the tripod and camera must have been listing Glenn
Don't be too sure. I have several of these and they were all tilted that way until I straightened the valves.