Mystery set at a sale this weekend

[zeno]

Originally Posted by Jon A.

I'm thinking the manufacture date label is worn, I don't think the System 3s were out until 1978.

System 3 "style" chassis came out the end of J line on a few
TOTL consoles. As far as I know System 3 was never used on
the sets or in literature.

K line brought the name & ad campaign. Sets were 19" & 25".
System 3 was a feature list not a chassis. J & K sets used the
9-153 HV module not the 9-160. They were the most reliable
sets Zenith ever built. Also the CRT's used a green phosphor
that was stunning. One thing I never tried that I would like
to is swap the 9-152 with a 9-152-02 that has a comb filter.

L line brought the 9-160, comb filter, 13" & 17" and RAT tuner.
Reliability dropped but sales went through the roof......

73 Zeno
LFOD !