I once found a TV like that RCA (think it was an RCA, but similar model, mounted on a swivel) on the curb back around 1970, but my father (who was also into electronics) said to not waste time on a set with such a small screen. Tested the tubes, think the horiz output's cathode had a short to the heater, but as a high school kid with no money, couldn't afford the big bux for a new tube.
It got parted out and tossed. At the time it wasn't an interesting antique, but just an old POS...