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Interesting. The ad specifically mentions that the set features a three-gun RCA tube. That tube's screen looks nothing like the screen on the one in the drawing. Like others here on the forum, I doubt the set was ever produced, although one of the engineers who was associated with RCA's tricolor tube development told me back in the 1980s that RCA shipped two 15GP22s and two deflection yokes to every US TV manufacturer for them to use in color TV development.
As an aside, My old shop is air-conditioned with an old AMC air-conditioner of that vintage in the wall.
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