I think possibly hands were replaced or swapped but not a big deal to me. It's a beauty for sure.
Also possible lume was added later and hands original. I bought it so if /when it arrives I'll provide better forensics..
I agree with @jumpingsecond .
If the movement is correct then I have no reason to think it’s “franken”. Definitely central chrono hand is a replacement and so is the crown. But the h+m hands might be original, regardless of the lume plots. (At least they look like correct 1930s UG hands, even if maybe they were not mounted on that dial in the factory...)
I think the lume plots are original.
To be honest, I have always thought that my Contax (the one from that thread cited) had its caseback replaced because all other Contaxes I have ever found were 607xxx or higher, but it would be a little strange to have two Contaxes with cal 285 with case backs swapped both to a 587xxx serial.