I did not find this one pictured in a catalogue. It has some weird innards as - a "slant" vaporizer, - a gas tube in the shape of a question mark and - a nozzle with attached filter tube and - lots of thick-layer asbestos gaskets. So I think this one is a rather old lamp, maybe late 1920s to early 30s. I an not sure on this. Very elaborate design... The nozzle is marked "2000" so I suspect it is a 2000HK lamp which does does not run properly yet. Erik
