Hi all, I just acquired a Zorki 3 and, am in the process or restoring it. The lens that came with it has quite a bit of fungus and I would like to replace it with one in good+ shape. Would prefer one with serial no. starting with 54XXXXX, in order to match production year of the camera. If you have such a "spare" that you can part with, please drop me a note. Thank you.....