[etype2]

I left out a key word in my above post, meant to say NTSC color gamut.

It is my understanding from internet articles and this forum that 1953 NTSC primary colors were too saturated and couldn’t be made bright enough for use in the consumer (CRT) TVs of that era with the exception of the 15GP22 and the 21CT55, so the NTSC Color Gamut was never used for volume commercial production of color TVs. As a result, the NTSC Gamut was never really an actual Standard Color Gamut, and there is essentially no consumer content based on the true NTSC Color Gamut?

So instead of the official NTSC gamut colors, the phosphor colors that were actually used in early color TVs were developed by the Conrac Corporation, which eventually became the SMPTE-C Color Gamut Standard. TV production studios used Conrac color monitors to produce their broadcast TV content, so it was the Conrac Color Gamut rather than the NTSC Gamut that was the real early color television Standard Gamut. Correct me if in error.

EDIT: I’ve seen photos of the CT-100 and 21CT55 used as monitors in 1955 at NBC studios Los Angles and New York (perhaps monitoring 1953 NTSC color gamut from TK-40 cameras?) If so, what programs and only kinescopes?