The front barrel of the lens has a Zeiss name “plate” (see imgur link)
I have scoured the internet and have not been able to find any additional information. Is this is a genuine Zeiss lens or
a Jupiter lens with a fake plate around the lens.
The back of the lens has no info on it, but the marks for the f-stop seem to be a bit different than on other lenses, especially the holes on the far ends of the f-stop range. Also, there are clicks when moving the f-stop ring but they don't seem to click on each mark.

http://www.ussrphoto.com/UserContent2/2492021_gw9IRLC.jpeg

http://www.ussrphoto.com/UserContent2/2492021_1dErfGf.jpeg

http://www.ussrphoto.com/UserContent2/2492021_9XiGGPU.jpeg

http://www.ussrphoto.com/UserContent2/2492021_BHUxTHy.jpeg

http://www.ussrphoto.com/UserContent2/2492021_K3mSvsF.jpeg
https://imgur.com/a/JBsDfyS