Wow, that's a great score. Santa came early this year!
Ed Reitan's website has a lot of info about early color TVs:
http://www.novia.net/~ereitan/index.html
If you go to the Color Receiver Gallery, you'll see a product brochure for your TV and a few details about that model.
As Sandy G mentioned, it is pretty standard procedure to replace the old capacitors on these sets, to ensure safe and reliable service. They deteriorate with age, and it would be a real shame to damage such a nice set if one of the old electrolytic caps fails.
Phil Nelson
Phil's Old Radios
http://antiqueradio.org/index.html