2 Comments

1. 
   boxerclaus · 2020-02-25 10:48

   I looks a little like a shower from an outdoor swimming pool :-) I guess it must have been used for a telephone or something like that.

2. 
   mrgamera · 2020-02-25 13:41

   @boxerclaus Yes, I had your same impression! There was a kind of light bulb, I suppose but now only the concrete remains.