I just received this M42 mount Yashica TL-Super body for very little money from a non-photo online seller who didn't know if it worked.
I'm happy to report it is in near mint condition and everything does work including the meter. I've never handled one of these before and I'm quite pleased with its overall quality.
The TL-Super is all-mechanical save the meter which uses a modern S76-type battery, the first camera to do so according to the manual. The camera has a hot shoe, mirror lock-up and self-timer and 1-1/1000 shutter speeds with cloth curtains. Build quality seems quite good, as good as any camera of this era from Japan. Unfortunately, I don't have any M42 lenses on hand so that will be my next project.