I had a manual click stop (not pre-set!) diaphram 100mm 2.8 Meyer Orestor a buddy bought in East Berlin with "smuggled" Ostmarks which, thereby, cost a princely 10 dollars at the time. I loved the lens, especially for portraits at f/4.0 (which precluded needing to stop it down before releasing the shutter); gave it to a friend when I acquired a "better" lens. She still has it and will not part with it. Drat! Auto versions now run over a hundred bucks used in Europe.
I now have a pre-set Jupter 85 2.0, but have not yet used it. I have a TM Spotty and can also use it on my Nikon with an adapter.