This is one of the more "elegant" homemade Smena 8 stereos. This is two Smena 8 bodies connected together to make a single stereo camera.
This one has all the mechanics coupled, the focus and aperture rings are connected with beautifully crafted mechanisms.
The shutter release button had been relocated more towards the center and a single button serves as a release for both cameras with a makeshift bridge inside the camera. (see photos).