Hi, I wish a happy 2021 for you too.
The TV is a Brazilian brand, an Invictus set, from 1965, it is Model M11, a lot of this little TV were sold here in the 60's. Like 99% of the local brands this brand didn't survive the transition into the color TV era ( after 1972 ).
I put a video of it working on YouTube:
https://www.youtube.com/watch?v=fIraKFIhf44