I picked up a lens at an estate sale and I wondered if anyone had any experience with this line or this lens:

Komuranon-S
6 Elements in 4 Groups
f75/5.6

The lens appears unused/mint, the inner box was sealed and the and there is an old price sticker for $89.99 on the box. I bought that and an (apparently) unused El-Nikkor 50mm f4 very cheap.