In a 1956 copy of Popular Photography, there was an article on the German lens maker Kilfitt. In the article, reference was made to a 180mm f/1.9 lens called the Grand-Kilar… there was even a picture. But did this lens actually exist? Well according to vague literature, it appeared in 1955, a 4-element lens, designed by A. Burger. But brochures of the early 1960’s show nothing in the way of 180mm lenses. It does appear in various editions of Arthur Cox’s “Photographic optics” in the 1960s, however searching the net does not seem to yield anything in the way of tangible proof to suggest any exist today. Perhaps very few were actually manufactured. In comparison the to SLR, it seems like a massive lens for the period.