Haven't seen one of these since about 1977/78! Played by National's demo team - Brian Lake and the 'lovely Sonia'. The National brand was originally brought in by Southern Organs, the name later changed to Panasonic, and then finally to Technics (going 'upmarket' each time!) And all three of these are brand names of the parent company Matsushita.
Alas, this one was designed before the Japanese started producing 'Western' sounding organs. That was just about to happen. So this one, though it looks good and is built to a very high standard, it sounds very thin - typical early 70s Japanese sound.