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 6690366
Both shutter and light meter (run on 2 LR44 button cell batteries) have been tested and work .
The clean lens is a Nikon lens series E 50mm 1:1.8 serial number 1916371