Rick,
Just about any old radio is worth fixing/restoring. You probably won't get rich but the efforts are well worth the finished product expecially once thats been in the family as in your 97T. As a general rule, big console radios will sell for around $50 - $150 unrestored unless were talking about the Holy Grail, 25 tube Zenith Stratosphere.
The 97T would be a nice project, just remember to change those filter and paper capacitors along with checking the resistors for drift. Schematic should be available at
http://www.nostalgiaair.org.