This is the first of the Soviet and Russian cameras I purchased. It is a Zenit 12 XP made by KMZ near Moscow. It is a completely manual 35mm with cloth shutter and a M42 lens mount. The only thing the battery was for was the light meter. The Zenit line of cameras was originally based on the Zorki rangefinder cameras which in turn were originally copies of 1932 Leica II camera. Clear as mud ain't it.
This particular example I purchased new around 1985. It has a manufactured date of 1984. It was originally labeled Cambron and sold by Cambridge Camera. With it I purchased a Carl Zeiss Jena lens (Tessar 80 mm). The C.J. Jena line was the East German counterpart of Carl Zeiss. It has non detent stop aperture ring so you can get all the inbetween f-stops you heart desires.
Quite a few of my sunset and fisheye pictures have been taken with this camera.