If this was For Sale in the US Thrift store, they would probably want more for it, than here in Canada. I remember seeing these at Zellers and Canadian Tire, when they were New.
So there's different methods in using the 240p test suite. From what I can see, that TV isn't bad and is centered properly. It's tough to tell how the geomtry is on that TV from your footage, but it seems kind of solid.
just goes to show there was never a golden age when all new TVs had perfect geometry out of the box. I think a lot of people pick CRTs up now and fret over it thinking it is something that has degraded over time and needs to be fixed. Someone taking this out of the box back in the day to watch TV on or play N64 wouldn't have given a shit about it. Likely wouldn't have even known what geometry was.
Nice video... but you should probably do some research on your crt tech. The 240p test suite is an amazing tool for checking and adjusting a multitude of things like color correction, picture geometry, convergence, sharpness, and even input lag. Your going to need to know how these things work on a crt if you want to be able to fully understand how to get the best picture out of them. Or even if you are getting a good clean and color correct image that is in focus.