It's from a local PA store, the owner says they are from an old Neumann console... (he's got a whole bunch of them).
Has anybody seen one of these before?
More pics here:
http://www.partymommsen.de/pepe/im000045.jpg
http://www.partymommsen.de/pepe/im000039.jpg
http://www.partymommsen.de/pepe/im000044.jpg
Thanks a lot
Stephan