Hello,
this tv set is not in my posession, I did it on behalf of the Kuba museum in Wolfenbuettel, less than ten miles far away from where I live at home:
http://www.kuba-museum.de/hauptseite.html
German television in the Third Reich depends on U.S. patents and television devices. For example, the Zworykin iconoscope and the Farnthworth camera of the Fernseh AG were imported from the U.S., some schematics from England. Therefore, the U.S. Americans got the German white phosphors for their picture tubes, to change from green screens to white screens.
Telefunken had it's own development centers. The Fernseh AG worked for military projects. One project was the viewing bomb, a bomb with a high-resolution camera which could be directed by remote control. The camera and monitoring television systems worked with a 1,000 line television system.
Of course, Nazi television was used for propaganda reasons, but it was not genuine German home grown. The scheduled German television service in 1935 was overhasty with it's low definition 180 line tv standard. But this was only for propagandy reasons too.
Kind regards,
Eckhard