I got a B&K 440 CRT tester from an eBay seller and tested the picture tube in my Zenith TV Radio Cobramatic console. Although it tests on the low end of good the tube has good cutoff and should produce a reasonable picture. Unfortunately the flyback is bad. The Zenith part number is S-17233 in case anyone here knows of one that might be available.
Here is the youtube video I posted.
http://youtu.be/CsaIEpoIg1A