Polished-up the rear backing plate -
Not mirror-shine, but pretty sure that's about the right level - but it's hard to know. The bikes in the Honda ads probably had more shine, but those most likely were "photo bikes" and not production models.
Trying not to over-restore it. Won't be a museum piece when done, but it should be decent.
Working on the wheels now. Some rust on the chrome rim and corrosion on the spokes to deal with. Going to try light blasting with plastic media on the inner area of the hub to clean it up. You really can't get in there with anything else.