One odd ball monitor from abt 1970 was a Sony built by Admiral of all people.
It was a 19" all tube chassis with a jack pack added for VTR's.
I have seen two of them, one at Sony factory service & the other
at a regular shop. I would guess the reason behind it was that trinitrons
were 17" at the biggest back then. Why they went with Admiral is
beyond me. Other MUCH better sets at the time. Zenith, RCA, S-C etc.
I believe someone on the list has one.
73 Zeno
LFOD !