A couple more photos. BU2299 was shot from behind the school house on Mehrhooger Strabe. Across the street the brewery complex can bee seen with tall building. BU2300 shows the next building to the west which may have been the headmaster's house. I suspect the sign would have been just before that house near its front garden wall. Regards ....
I’m normally on my phone looking at this, logged on using my computer and obviously looking at pictures on a big screen! I think you might be right with that pic being on Mehrhoogerstr. Even the telegraph pole on the other side of the road fits. Alex.