OK, I'm declaring this project finished. The picture is very watchable and I got around to touching up the cabinet:
This article provides many details:
https://antiqueradio.org/art/Emerson...onFinished.jpg
One question in parting: why did Emerson use a pattern of tiny concentric grooves in the face of the display screen? In this extreme close-up, I heightened the contrast to exaggerate the circular pattern, which is imperceptible at a normal viewing distance:
I have a couple of guesses (see article above), but optics is not my strong suit, and I haven't restored any other projection sets, so if you know the answer, kindly clue me in!
Regards,
Phil Nelson
Phil's Old Radios
https://antiqueradio.org/index.html