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Actually, the 19VP22 has the same glass to metal flange seal like the 15GP22, but with the phosphor dots on the face of the CRT and a much simpler curved shadow mask construction. In the photo, you can see the flange shrouded by its polyethylene shield.
RCA was obliged to license this construction from Hytron (CBS), from which RCA developed the 21AXP22. I was not until the RCA 21CYP22 came out that there was an all glass color CRT.
Harry, if you want to make a socket adapter to test the 19VP22, it uses the same socket as the 7Jp4. You would need to add/move some pins to your socket.
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John Folsom
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