This is a very late GE-built 40-incher using the frame originally engineered for the 1957 Straight-Line Design program.
It appears to have been shorn of most of the "whiz-bang" stuff that GE put on its 40-inchers for so long. The photo is small, but I see no indications of it having Sensi-Temp, the electric meat thermometer or provisions for a griddle. At least it's P*7. I don't presently have any idea if this was an upper-MOL choice, or if it was the only choice; 40-inchers were not exactly hot sellers by this time.
What's interesting is that its styling contains a number of cues that GE evidently specified for the next generation that was WCI-built. A picture of one of those "illegitimate" WCI-built GE 40-inchers is below, for comparison to the photo at the top of this thread; you can see that if someone was accustomed to GE-built GE styling, the new WCI-built GEs wouldn't have been too jarring: