From about 1965 19" solid state B&W I remember were from
Zenith, Motorola, Westinghouse, Magnavox & I think Sylvania.
I only remember a 12" RCA which is surprising.
Sets from Japan were all 12" & under.
Here is an interesting Zenith ad for the smaller set.
https://www.youtube.com/watch?v=IgzYj5_mlxg
The 19" was also hand wired on a steel chassis with plug in
transistors. Quite rare due to cost, I have only seen a few.
73 Zeno
LFOD !