One of the legendary tuners of the great era of tuners. I have two of them. Each would benefit from cleaning the wiper on the 7 gang (!) tuning capacitor with some Deoxit to eliminate the inter station noise.

Sell either one for $190, both for $300 plus shipping. I paid $300 for each intending to do my own restoration (restored they can go for double that). I just don't have the time and space to pursue my audio hobby anymore.
The units cost $625 in 1978. In today's dollars that's almost $2,400. It gives you an idea of how serious a tuner this is. Since the 60s and 70s tuner build has gone steadily downhill, which is why all the classics date back to then.
I will include the service manual.