I have never heard of the Caspeco name before and bought this lens only because it's an 85mm focal length. The interesting aspect of this lens is that it has interchangeable mounts, much like the one used on old Komura interchangeable lens system. This particular lens has an Exakta mount which I don't have an adapter for. Also the aperture is stuck on wide open, possibly due to oil sipped into the blades, but for $5, why not?

This picture was taken with the lens held to the camera by hand (the human adapter).