(Reverse-)Mounting Schneider Componon-S 50 mm on C/CS-Mount

As mentioned above, none have focus, and there are some changes in design over the years.
I now have one exactly as the listing you are sharing.
The lens has what looks like a slider-switch, which makes the f-stop ring have a continuous-feeling or a steps-feeling. That model does not have the illuminated window, or the tab.

From what I read, for our application it may be best not to have the illuminated-stop-window (light-pipe), but the work around is to cover it to avoid light ingress. I was not looking for one without the window, but was happy that it didn’t have it (same as your listing).

This post explains it.