The Paley Center here in NYC has a copy in their archives from KNXT in CA. Is that copy in the wild?
https://www.paleycenter.org/collection/item/?q=&p=1&item=T:87211
It is in the wild, although not widely distributed.
I’ve looked at the copies of the KNXT at both the NYC Paley Center and the L.A. one. This version is okay but not a great recording - it has a lot of noise on the screen with heavy ghosting issues. I don’t think it would be very valuable as a preservation other than for historic value, and possibly for the commercials, some of which will be local.
–SKot