The OTA has Star Instruments 20" F/12 optics. They come with an interferometer test and are razor sharp. The secondary mirror focuses with a 12 volt gear box motor driving a Byers lead screw assembly. The system has three cooling fans that can be staged and the rear cell can be adapted for just about any format. It sits in a tube strap assembly so counter-weights aren't necessary.
The mount is a Byers' Series III. This declination assembly is solid bronze. I don't think there were many of these made. It has 18" drives that are driven by a stepper motor system coupled to a 16:1 planetary gear box reduction. This allows for almost zero back-lash. The motors are driven by a Quadrant GoTo system that is inter-faced to many software options. I personally use "The Sky". It comes with a manual and a full database.
This 'scope has been in a climate controlled observatory "it's whole life" and is in good condition. The system has a steel pier mount which is fully adjustable in azimuth. If you have any questions or need more photos or just want to talk about this system please give me a call. I will consider just about anything in trade except your kids and wife; I already have three of each!! $31,500 OBO + shipping