Years ago (1990 I think), I ran across a book in the "stacks" section of the University of Oklahoma's library that was what RCA submitted to the FCC in 1953 for the approval of dot-sequential compatible color. Fascinating read it was. Had photos and build details of I think four or five tri-kinescope sets, and then four or five single-CRT color kinescope sets. Also had the details of how the triniscope (single color CRT) was built too. I remember one or two of the single CRT sets had two chassis in a model-five style cabinet. Eventually they got it down to a single chassis, and made a couple more models after that. I don't know if the Model 5 was part of that document, since I didn't even know about the CT100 at that time. I was still cutting my teeth on AA-5 radios at that point.
If anyone is near OKC, go and check it out. Hopefully it still exists in the old Stacks section.