FED 3 Soviet rangefinder photo camera vintage brown leather case

It was produced by the Kharkiv Industrial Engineering Association "FED" from 1961 to 1979. Compared to the previous model (FED-2), the shutter speed range was expanded, 1/15, 1/8, 1/4, 1/2 and 1 second were added, and therefore the vertical size of the camera increased. There was a mechanical self-timer. The camera had a cast aluminum body with a removable back wall, both standard cassettes and two-cylinder cassettes with a wide opening slot were used. I bought this camera a long time ago, more than 5 years ago. I tried to figure out a little on the Internet how it works, opened and closed the case, as shown on the Internet. I pressed different buttons. Everything seemed to be working. Then I read that you can't do some action, press something there, but I think I pressed it. As a result, I abandoned it, since mastering the technique is difficult for me. Weight 950 g.