A Set I Haven't Seen Discussed

[West]

I think once RCA had a 21-inch tube, it was all over for the 19VP22. RCA had been promising a 19-inch tube, which would use the same cumbersome construction methods as the 15GP22.

But when Norman Fyler and William Rowe of CBS-Hytron showed their greatly simplified Colortron, RCA had to bite the bullet and pay royalties to CBS.

So I think RCA decided to go straight to a 21-inch tube to keep other manufacturers from adopting the 19VP22. This is why, in my thinking, the CT-100 was quickly modified to take the 21-inch tube (the 21-CT-55) as an interim measure, just to get their tube out there, allowing more time to develop the simplified models with the CTC-4 chassis.

[NewVista]

Originally Posted by West

I think once RCA had a 21-inch tube, it was all over for the 19VP22. .

The 21 round is actually 19" viewable so I would still see the CBS as serious competition for RCA. Maybe CBS couldn't tolerate losing money the way RCA was determined to (RCA having deeper pockets and also eyeing potential broadcast sales if TV buyers demanded more color programing)

[reeferman]

ETF just listed one (with photos and more) in their "what's new" section.