I recall a set with the CA chassis showing up in HS shop that looked in perfect condition, raster nice and sharp without a cateract - those days long ago, a roundie was a special set even then.
BUT the red gun was nearly dead or maybe another student zapped it with the tester-rejuv before I got to it. It sat there after that, waiting for a donor CRT. It really seemed worth the trouble based on every other measure.
No surprise that your CRT is RCA Hi-lite, being a year earlier than a CB-21" chassis GE that I worked on.
CB-21 was GE's last 21" round set, it had the original CRT and it was pretty decent emission like yours seems to be, the CRT label was well-hidden too.
IMHO, your CA will make better color than that '66 model did due to fact RCA circuits were used in the CA, but GE went full-on porta-color with the CB.
There was a FY-chassis for 1964, like the CTC-15 but I would jump for a CTC11 clone, the CW. I never saw one of those either.
