I found this at a yard sale in rural New Hampshire. It’s a nickel plated cast iron single burner stove. It works by filling the ball-shaped reservoir with, preferably, ethanol alcohol (do NOT use camp fuel or you will be faced with an emergency). Gravity feeds the burner which you light with a match. You adjust the flame with the wooden knob. It seems in very good condition, although I haven’t fired it up. It’s possible that it would benefit from having a gasket fired in the flange between the burner and the knob. This would be great for a nice camp stove.