Some old stuff I had on my desk because I was too lazy to put it away...
The three-way receptacle is actually like a US gem tap, it can be plugged in or screwed on instead of a single face plate. The rotary switch with the hexagon knob is probably not original. I found it in a former kids bedroom, missing the cover, just two layers of wall paper. The receptacle guts belong to a receptacle matching the switch with the glass plate.
Now with a few covers off...
Note the brown paper fuses in the receptacle.