That's o.k. I do have a 24mm in M42 mount but it's not as good as the Vivitar lens. You should be pleased with the 135mm Zeiss Sonnar too. I have one of those.
What is the focal length and mount of this one? d128eb01.jpg and I'm also starting to like the look of that Cosmic 35 but I won't be greedy. If no one else is interested in a few days, it could find a home here.