Sort of. Rare, but not especially desirable. I think they probably made a decent number of them, but they were mostly installed in motels and the like, and they got used a lot and thrown out when they died.
I honestly wouldn't feel too terrible about it; there are a lot of Panny's out there that people like a lot more.
If you want to see some cool TVs from the general era being worked on by a good hobbyist, check out this youtube channel:
https://www.youtube.com/@ResurrectionRetro/videos
He's definitely got a few Panasonic TVs in there. It will give you an idea about what you can sometimes expect them to be like when they are working