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Here we have a rare 1959 Mir which is a Zorki 4 without the slow speed escapement. USSR only. This had a jammed shutter that I traced to a dowel pin under the shutter speed selector mechanism that came unseated, I removed the top and re-aligned the dowel pin, which came unseated from some loose screws on the bottom, easy fix. Also did a clean and check on the VF/RF on this one, nice bright finder, good for that Jupiter-3 f/1.5 lens.