This is a real old guy, the oldest of all my stoves. According to the catalog, it was produced in the United States around 1897. It's a little different from the Swedish production of the same period The stamped text on the tank is beautiful There is some useful information on the tank lid No text at the bottom This is what it looks like when I get it, it is wrapped in thick oxide I removed the oxide on its surface, but did not polish it. The next thing to do is to restore his function. Below are some details of the parts. The pump can be removed as a whole, and the structure is more complicated than later products The structure of the pump check valve is old, but it is very easy to maintain The burner flame cup is also larger than the later products. Unfortunately, the burner cover is missing. The original owner replaced it with an optimus cover. Its inner cover is original, the inner cover is threaded and it is fixed to the burner. I'm very happy to watch this stove over 120 years old burning again!