Leitz Hektor 135mm f4.5 Bought this on e of the bay last night. I believe it's pre WW2 and from the limited image examples i have seen it could be the sharpest lens i have ever seen. We will see when it get's here. It only cost me £20 so i'm not expecting much, in fact i don't really care. It will look good in my collection. Some numpty has converted it from M39 Leica to M42 fitting so it looks like a dog's dinner! At least i won't need to buy another adapter!