I just dug up a Schneider Kreuznach Tele-Xenar f : 5.5 36cm on a shutter that says nothing except 740869 and Compound. It is mounted on a lensboard that says "Technica 3", "Linhof Munchen", "Format 9X12" and might be the shutter name. The black paint is comming off the lens revealing a brass barrell. The lens "looks" clean and clear. The shutter works - i.e. it is fast at high speeds and slow at low speeds. Apperature is clean and smooth. I am not a lens finatic by any means but am interested in information anyone give me about this lens.