Before. Carpet ran up to the wall which had a wallpaper. One can just notice the plank covering the end of the treads. I mistakenly forgot to take pictures of the front.
Here it is mid-way. The inside end has been stained and varnish and was ready for the new wallcovering. As it turns out carpeting was done before that. It was probably a wise decision not to install wallcovering at that stage, when a lot of traffic was still occuring up and down these steps.
Below with wallcovering that the owner did quite capably by himself with assistance from his wife.