Early Westinghouse Rectangular Color CRT
 

Who manufactured the 22" rectangular CRT that Westinghouse used in a couple of 1957-58 prototype color TVs?

Westinghouse.
https://www.earlytelevision.org/west...e_h22t155.html
https://www.earlytelevision.org/22_i...lor_tubes.html

The ETF article mentions this, but it bears repeating the Westinghouse was actually manufactured and sold to consumers there's even a Sam's Photofact folder for it. The Westinghouse experienced a near total recall. There's 3 that are known to have escaped it and survived into the modern era and possibly more.... One that probably escaped and doesn't exist is one the late Dave Nash (dieseljeep) told me he saw in a Milwaukee second hand store when it was a few years old.

The CBS set may have been a prototype... There's only one, I believe Sam's didn't cover it, I'm not aware of any ads and IIRC the survivor lacks a cabinet.

I'd kinda like to find a set with this tube. I've got a good 1964 23EGP22 set, one of those 64 era Sears 14" Japanese rectangular color sets with the roundy gun....Add a Westinghouse to that and I'd have my own little exhibit of the development of rectangular color.

Westinghouse color tv as a prize
 

The test episode of the price is right had this very set at the first prize offered to contestants

I watched that episode and the MSRP was $600. on 11/19/1956.

Man, Sarnoff would have gone apoplectic if this had aired.