Found this on Ebay. Just had to buy it to figure out what it is. It is 200mm diameter lens of some type. appears to be a maksutov lens of some type. It appears to have a very short focal length. I did some research on Itek and they were into manufacturing cameras for spy planes in the 60's. Maybe someone here has seen these before and can give me a hint if it is good for anything besides conversation. I do not have a spy plane to test it out with.