Nikon EM black with Sigma Zoom-Master 1:2.8~4 f=35~70mm

The Nikon EM is an entry-level, interchangeable lens, 35mm film, single-lens reflex camera (SLR). It was manufactured by Nippon Kogaku K. K. in Japan from 1979 to 1982.
Serial number of the device is 6996754
Both shutter and light meter (run on 2 LR44 button cell batteries) have been tested and work smoothly.
The lens is a pure Sigma Zoom-Master 1:2.8~4 f=35~70mm with serial number 1068028.
There is some dirt in the viewfinder, but the image is still clear and this has absolutely no influence on the photos.