Here are some better pictures.
It is a G2438RZ Lincoln model. It has a Brightener on the CRT and the pictures are after a "clean" and then a rejuvenate and the emissions are in the middle of bad and good

I think it would still produce a watchable picture in a dark room for testing until I could locate a valid sub or a replacement. My guess it that this set was retired due to the dim CRT. But the price is right and I think I am going to try and get it if I can find room!